Home / 15,375,874.32-21,213,635.40-9,872,332.56

Finding the Fourth Proportional to 15,375,874.32, 21,213,635.40 and 9,872,332.56

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Solution

The fourth proportional to 15,375,874.32, 21,213,635.40 and 9,872,332.56 is: 13,620,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,375,874.32 : 21,213,635.40 = 9,872,332.56 : x
  2. Step 2: Convert to fraction form
    15,375,874.32/21,213,635.40 = 9,872,332.56/x
  3. Step 3: Cross multiply
    15,375,874.32x = 21,213,635.40 × 9,872,332.56
  4. Step 4: Simplify right side
    15,375,874.32x = 209,428,063,475,388.62
  5. Step 5: Solve for x
    x = 209,428,063,475,388.62/15,375,874.32
  6. Step 6: Final answer
    x = 13,620,562.91

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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.