Question 746942
You just need 4 times the amount of water in each batch, to the amount of sugar.  

For example, let's say you want to make a gallon of the mixture:

1 gallon = 4 quarts.  Therefore, since you have 4 quarts of water, you need one quart of sugar.  

Here are two equations you can use.  

Water = 4 * sugar

Sugar = Water/4 

If a "batch" is 4 cups water to 1 cup sugar, you'd need the same number of cups of sugar as the number of batches you are making.  So if you want 11 batches, that's 11 cups of sugar.  Water = 4 * sugar, so you'd need 4 * 11 cups, which is 44 cups of water.