1. **State the problem:** We have a proportional relationship between the amount a family donates, $x$, and the matching contribution from businesses, $y$, given by the equation $$y = 0.6x$$. 2. **Write the equation:** The problem states the equation directly: $$y = 0.6x$$. 3. **Find the contribution when $x=20$:** Substitute $x=20$ into the equation: $$y = 0.6 \times 20$$ 4. **Calculate the product:** $$y = 12$$ 5. **Interpret the result:** When a family donates 20 dollars, the businesses contribute 12 dollars. **Final answer:** 12 dollars