Home / 20,715,505.92-28,589,100.12-11,424,893.13

Finding the Fourth Proportional to 20,715,505.92, 28,589,100.12 and 11,424,893.13

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Solution

The fourth proportional to 20,715,505.92, 28,589,100.12 and 11,424,893.13 is: 15,767,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715,505.92 : 28,589,100.12 = 11,424,893.13 : x
  2. Step 2: Convert to fraction form
    20,715,505.92/28,589,100.12 = 11,424,893.13/x
  3. Step 3: Cross multiply
    20,715,505.92x = 28,589,100.12 × 11,424,893.13
  4. Step 4: Simplify right side
    20,715,505.92x = 326,627,413,553,870.19
  5. Step 5: Solve for x
    x = 326,627,413,553,870.19/20,715,505.92
  6. Step 6: Final answer
    x = 15,767,291.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.