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Finding the Fourth Proportional to 15,179.91, 20,944.80 and 9,127.38

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Solution

The fourth proportional to 15,179.91, 20,944.80 and 9,127.38 is: 12,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.91 : 20,944.80 = 9,127.38 : x
  2. Step 2: Convert to fraction form
    15,179.91/20,944.80 = 9,127.38/x
  3. Step 3: Cross multiply
    15,179.91x = 20,944.80 × 9,127.38
  4. Step 4: Simplify right side
    15,179.91x = 191,171,148.62
  5. Step 5: Solve for x
    x = 191,171,148.62/15,179.91
  6. Step 6: Final answer
    x = 12,593.69

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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.