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Finding the Fourth Proportional to 22,710.88, 34,067.76 and 7,129.12

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Solution

The fourth proportional to 22,710.88, 34,067.76 and 7,129.12 is: 10,694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,710.88 : 34,067.76 = 7,129.12 : x
  2. Step 2: Convert to fraction form
    22,710.88/34,067.76 = 7,129.12/x
  3. Step 3: Cross multiply
    22,710.88x = 34,067.76 × 7,129.12
  4. Step 4: Simplify right side
    22,710.88x = 242,873,149.17
  5. Step 5: Solve for x
    x = 242,873,149.17/22,710.88
  6. Step 6: Final answer
    x = 10,694.13

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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.