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Finding the Fourth Proportional to 22,711.80, 34,067.70 and 7,129.40

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Solution

The fourth proportional to 22,711.80, 34,067.70 and 7,129.40 is: 10,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.80 : 34,067.70 = 7,129.40 : x
  2. Step 2: Convert to fraction form
    22,711.80/34,067.70 = 7,129.40/x
  3. Step 3: Cross multiply
    22,711.80x = 34,067.70 × 7,129.40
  4. Step 4: Simplify right side
    22,711.80x = 242,882,260.38
  5. Step 5: Solve for x
    x = 242,882,260.38/22,711.80
  6. Step 6: Final answer
    x = 10,694.10

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1.5x scale

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.