Question

I'll show you the picture of the question I'm struggling with

Answer 1

The proportion of the first row with the second row is

$\frac{7}{12}=\frac{8}{16}=\frac{6}{12}=\frac{10}{20}=\frac{2}{4}=\frac{1}{2}$

that is, we have the proportionality 1:2, which correspond to the pink square.