Finding the Fourth Proportional to 20,553,305.31, 30,744,752.45 and 15,658,575.75
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Solution
The fourth proportional to 20,553,305.31, 30,744,752.45 and 15,658,575.75 is: 23,422,949.63
Step by Step Solution
- Step 1: Write the proportion equation
20,553,305.31 : 30,744,752.45 = 15,658,575.75 : x - Step 2: Convert to fraction form
20,553,305.31/30,744,752.45 = 15,658,575.75/x - Step 3: Cross multiply
20,553,305.31x = 30,744,752.45 × 15,658,575.75 - Step 4: Simplify right side
20,553,305.31x = 481,419,035,075,030.19 - Step 5: Solve for x
x = 481,419,035,075,030.19/20,553,305.31 - Step 6: Final answer
x = 23,422,949.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.