Home / 15,689,569.38-21,652,160.88-8,720,385.90

Finding the Fourth Proportional to 15,689,569.38, 21,652,160.88 and 8,720,385.90

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Solution

The fourth proportional to 15,689,569.38, 21,652,160.88 and 8,720,385.90 is: 12,034,441.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689,569.38 : 21,652,160.88 = 8,720,385.90 : x
  2. Step 2: Convert to fraction form
    15,689,569.38/21,652,160.88 = 8,720,385.90/x
  3. Step 3: Cross multiply
    15,689,569.38x = 21,652,160.88 × 8,720,385.90
  4. Step 4: Simplify right side
    15,689,569.38x = 188,815,198,442,483.59
  5. Step 5: Solve for x
    x = 188,815,198,442,483.59/15,689,569.38
  6. Step 6: Final answer
    x = 12,034,441.09

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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.