Explanation:
to find a similar ratios, they should be multiplied by the same number.
let's start with 14 and 21 . 14 and 21 are the multiples of 7.
7×3 =21
so first right box is 3
to find first left box 14÷7= 2
to find 2nd left blank
3×3=9
so 2×3 =6
to find 3rd blank:
we know 2×5 =10
so 3×5 =15
to find last one:
we know 3×8 =24
so 2×8 =16