Home / 21,329.28-32,002.98-8,179.92

Finding the Fourth Proportional to 21,329.28, 32,002.98 and 8,179.92

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Solution

The fourth proportional to 21,329.28, 32,002.98 and 8,179.92 is: 12,273.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.28 : 32,002.98 = 8,179.92 : x
  2. Step 2: Convert to fraction form
    21,329.28/32,002.98 = 8,179.92/x
  3. Step 3: Cross multiply
    21,329.28x = 32,002.98 × 8,179.92
  4. Step 4: Simplify right side
    21,329.28x = 261,781,816.16
  5. Step 5: Solve for x
    x = 261,781,816.16/21,329.28
  6. Step 6: Final answer
    x = 12,273.35

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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.