Home / 20,974,572.72-28,949,198.04-13,234,400.64

Finding the Fourth Proportional to 20,974,572.72, 28,949,198.04 and 13,234,400.64

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Solution

The fourth proportional to 20,974,572.72, 28,949,198.04 and 13,234,400.64 is: 18,266,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974,572.72 : 28,949,198.04 = 13,234,400.64 : x
  2. Step 2: Convert to fraction form
    20,974,572.72/28,949,198.04 = 13,234,400.64/x
  3. Step 3: Cross multiply
    20,974,572.72x = 28,949,198.04 × 13,234,400.64
  4. Step 4: Simplify right side
    20,974,572.72x = 383,125,285,068,062.75
  5. Step 5: Solve for x
    x = 383,125,285,068,062.75/20,974,572.72
  6. Step 6: Final answer
    x = 18,266,178.30

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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.