Answer:
beginning scheduled principal interest ending
year balance payment paid paid balance
1 20,000.00 5,083.61 4,950.28 133.33 15,049.72
2 15,049.72 5,083.61 4,983.28 100.33 10,066.44
3 10,066.44 5,083.61 5,016.50 67.11 5,049.94
4 5,049.94 5,083.61 5,049.94 33.67 0.00