Home / 21,456.28-29,627.70-16,141.88

Finding the Fourth Proportional to 21,456.28, 29,627.70 and 16,141.88

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Solution

The fourth proportional to 21,456.28, 29,627.70 and 16,141.88 is: 22,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.28 : 29,627.70 = 16,141.88 : x
  2. Step 2: Convert to fraction form
    21,456.28/29,627.70 = 16,141.88/x
  3. Step 3: Cross multiply
    21,456.28x = 29,627.70 × 16,141.88
  4. Step 4: Simplify right side
    21,456.28x = 478,246,778.08
  5. Step 5: Solve for x
    x = 478,246,778.08/21,456.28
  6. Step 6: Final answer
    x = 22,289.36

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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.