Finding the Fourth Proportional to 20,916,795.56, 31,278,876.21 and 19,896,428.84
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Solution
The fourth proportional to 20,916,795.56, 31,278,876.21 and 19,896,428.84 is: 29,753,024.69
Step by Step Solution
- Step 1: Write the proportion equation
20,916,795.56 : 31,278,876.21 = 19,896,428.84 : x - Step 2: Convert to fraction form
20,916,795.56/31,278,876.21 = 19,896,428.84/x - Step 3: Cross multiply
20,916,795.56x = 31,278,876.21 × 19,896,428.84 - Step 4: Simplify right side
20,916,795.56x = 622,337,934,707,433.88 - Step 5: Solve for x
x = 622,337,934,707,433.88/20,916,795.56 - Step 6: Final answer
x = 29,753,024.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.