Answer:
48
Step-by-step explanation:
Here, the sides are in proportion.
⇒ [tex]\frac{24}{k} = \frac{32}{64}[/tex]
⇒ [tex]\frac{24}{k} = \frac{1}{2}[/tex]
⇒ k = 24 × 2
⇒ k = 48