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Finding the Fourth Proportional to 13,561,808.80, 20,375,890.80 and 10,202,576.80

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Solution

The fourth proportional to 13,561,808.80, 20,375,890.80 and 10,202,576.80 is: 15,328,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561,808.80 : 20,375,890.80 = 10,202,576.80 : x
  2. Step 2: Convert to fraction form
    13,561,808.80/20,375,890.80 = 10,202,576.80/x
  3. Step 3: Cross multiply
    13,561,808.80x = 20,375,890.80 × 10,202,576.80
  4. Step 4: Simplify right side
    13,561,808.80x = 207,886,590,755,413.47
  5. Step 5: Solve for x
    x = 207,886,590,755,413.47/13,561,808.80
  6. Step 6: Final answer
    x = 15,328,824.78

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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.