8/3=12/n What is n?

8/3 = 12/n

n = 21

APRIL FOOLS!

Actual Solution: 

8/3 = 12/n 

(8/3)*n = 12

n = 12/(8/3)

n = 12*(3/8)

n = 12*(3/8) = 4 1/2

$\dfrac{8}{3}=\dfrac{12}{n}\\ n=12\div\dfrac{8}{3}=\dfrac{9}{2}$