# If 18:X = X:8, Then X=?

**Answer: (D) 12 **

**Solution:-**

18: X = X: 8

Then, 18/X = X/8

By cross multiplication,

18 x 8 = X x X

X^2 = 144

Square root on both site,

X = 12

Then, the value of X is 12.

Hence, the correct answer is option (D) 12.

**Answer: (D) 12 **

**Solution:-**

18: X = X: 8

Then, 18/X = X/8

By cross multiplication,

18 x 8 = X x X

X^2 = 144

Square root on both site,

X = 12

Then, the value of X is 12.

Hence, the correct answer is option (D) 12.