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Finding the Fourth Proportional to 22,079.31, 30,468.80 and 12,520.11

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Solution

The fourth proportional to 22,079.31, 30,468.80 and 12,520.11 is: 17,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,079.31 : 30,468.80 = 12,520.11 : x
  2. Step 2: Convert to fraction form
    22,079.31/30,468.80 = 12,520.11/x
  3. Step 3: Cross multiply
    22,079.31x = 30,468.80 × 12,520.11
  4. Step 4: Simplify right side
    22,079.31x = 381,472,664.97
  5. Step 5: Solve for x
    x = 381,472,664.97/22,079.31
  6. Step 6: Final answer
    x = 17,277.38

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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.