#### Answer

$\frac{18}{24}$

#### Work Step by Step

We are trying to write $\frac{3}{4}$ with a denominator of 24. In order to do this, we must first divide 24 by the current denominator.
$24\div4=6$
Therefore, we must multiply both the numerator and denominator of the original fraction by 6.
$\frac{3\times6}{4\times6}=\frac{18}{24}$