When a figure is on the page, a new one is moved to the next one?

Question

Here is an example of a TeX code I use:

\begin{figure}[h]
\centering
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth]{a}
    \caption{some caption}
  \end{minipage}
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth]{b}
    \caption{some caption}
  \end{minipage}
%\vspace{}
\centering
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth]{c}
    \caption{some caption}
  \end{minipage}
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth]{d}
    \caption{some caption}
  \end{minipage}
\end{figure}

\begin{figure}[h]
\centering
\includegraphics[scale=0.5]{e}
\caption{some caption}
\end{figure}

The last figure is always moved to a new page, why is that the case and how do I make it stay on the same page as the above?

Answer 1

Put everything in the same figure environment, that will ensure that they end up on the same page, as figures cannot be broken across pages.

\documentclass{article}
\usepackage{graphicx}
\usepackage{kantlipsum}
\begin{document}
\kant
\begin{figure}
\centering
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth,height=3cm]{example-image-a}
    \caption{some caption}
  \end{minipage}
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth,height=3cm]{example-image-b}
    \caption{some caption}
  \end{minipage}

\medskip

  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth,height=3cm]{example-image-c}
    \caption{some caption}
  \end{minipage}
  \begin{minipage}[b]{0.49\textwidth}
    \includegraphics[width=\textwidth,height=3cm]{example-image}
    \caption{some caption}
  \end{minipage}

\medskip

\includegraphics[width=\textwidth,height=3cm]{example-image-16x10}
\caption{some caption}
\end{figure}
\kant
\end{document}