Find the fourth proportional to 3, 12, 14.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 56.
Let the given numbers be a, b, and c, and, the fourth proportional be x
Then, a/b = c/x
x = bc/a
Similarly, in the given question
⇒ a = 3, b = 12, and c = 14
⇒ x = (12 × 14)/3
⇒ x = 56
Hence, the fourth proportion is 56.