Answer:
X=10 I may be incorrect, but I hope this helps!
Explanation:
Its the same shape just one is bigger than the other.
So 6:5 is equal to X+6:14
The way to get from 5 to 14 is the way you get 6 to 6+X
The way to get from 5 to 14 is:
5*2+4=14
6*2+4=6+X=16
16-6=10
X=10