Final answer:
To maintain the ratio of 2 cups of grape juice for every 4 cups of apple juice, you will need 7 cups of grape juice for the 14 cups of apple juice you have.
Step-by-step explanation:
The given problem is about creating a fruit punch using a specific ratio of grape juice to apple juice. To solve this, we will use the provided ratio of 2 cups of grape juice for every 4 cups of apple juice.
Since you already have 14 cups of apple juice, we can set up a proportion to find out how many cups of grape juice you will need:
4 cups apple juice / 2 cups grape juice = 14 cups apple juice / x cups grape juice
Now we cross multiply to solve for 'x':
(4 * x) = (2 * 14)
4x = 28
x = 7
Therefore, you will need 7 cups of grape juice to mix with your 14 cups of apple juice in order to maintain the correct ratio for the fruit punch.