Home / 21,432.64-29,575.68-12,001.12

Finding the Fourth Proportional to 21,432.64, 29,575.68 and 12,001.12

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Solution

The fourth proportional to 21,432.64, 29,575.68 and 12,001.12 is: 16,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.64 : 29,575.68 = 12,001.12 : x
  2. Step 2: Convert to fraction form
    21,432.64/29,575.68 = 12,001.12/x
  3. Step 3: Cross multiply
    21,432.64x = 29,575.68 × 12,001.12
  4. Step 4: Simplify right side
    21,432.64x = 354,941,284.76
  5. Step 5: Solve for x
    x = 354,941,284.76/21,432.64
  6. Step 6: Final answer
    x = 16,560.78

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1.5x scale

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.