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Finding the Fourth Proportional to 21,476.64, 32,207.24 and 7,432.86

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Solution

The fourth proportional to 21,476.64, 32,207.24 and 7,432.86 is: 11,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.64 : 32,207.24 = 7,432.86 : x
  2. Step 2: Convert to fraction form
    21,476.64/32,207.24 = 7,432.86/x
  3. Step 3: Cross multiply
    21,476.64x = 32,207.24 × 7,432.86
  4. Step 4: Simplify right side
    21,476.64x = 239,391,726.29
  5. Step 5: Solve for x
    x = 239,391,726.29/21,476.64
  6. Step 6: Final answer
    x = 11,146.61

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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.