Consider, today, the discount of the following titles:

(1) A duplicate of nominal value equal to R$ 20,000.00, discounted 4 months before its maturity, through a simple commercial discount operation with a rate of 2,5% per month.

(2) Another duplicate, discounted 4 months before maturity, through a simple rational discount operation with a rate of 2% per month.

If the values of the corresponding discounts are equal, determine the nominal value of the second duplicate.