Finding the Fourth Proportional to 20,661,134.51, 30,982,124.88 and 7,703,806.13
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Solution
The fourth proportional to 20,661,134.51, 30,982,124.88 and 7,703,806.13 is: 11,552,138.31
Step by Step Solution
- Step 1: Write the proportion equation
20,661,134.51 : 30,982,124.88 = 7,703,806.13 : x - Step 2: Convert to fraction form
20,661,134.51/30,982,124.88 = 7,703,806.13/x - Step 3: Cross multiply
20,661,134.51x = 30,982,124.88 × 7,703,806.13 - Step 4: Simplify right side
20,661,134.51x = 238,680,283,416,058.88 - Step 5: Solve for x
x = 238,680,283,416,058.88/20,661,134.51 - Step 6: Final answer
x = 11,552,138.31
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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.