Finding the Fourth Proportional to 20,916,786.74, 31,278,863.00 and 19,896,420.02
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Solution
The fourth proportional to 20,916,786.74, 31,278,863.00 and 19,896,420.02 is: 29,753,011.48
Step by Step Solution
- Step 1: Write the proportion equation
20,916,786.74 : 31,278,863.00 = 19,896,420.02 : x - Step 2: Convert to fraction form
20,916,786.74/31,278,863.00 = 19,896,420.02/x - Step 3: Cross multiply
20,916,786.74x = 31,278,863.00 × 19,896,420.02 - Step 4: Simplify right side
20,916,786.74x = 622,337,395,889,384 - Step 5: Solve for x
x = 622,337,395,889,384/20,916,786.74 - Step 6: Final answer
x = 29,753,011.48
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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.