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Finding the Fourth Proportional to 15,179.27, 20,942.42 and 8,463.69

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Solution

The fourth proportional to 15,179.27, 20,942.42 and 8,463.69 is: 11,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.27 : 20,942.42 = 8,463.69 : x
  2. Step 2: Convert to fraction form
    15,179.27/20,942.42 = 8,463.69/x
  3. Step 3: Cross multiply
    15,179.27x = 20,942.42 × 8,463.69
  4. Step 4: Simplify right side
    15,179.27x = 177,250,108.41
  5. Step 5: Solve for x
    x = 177,250,108.41/15,179.27
  6. Step 6: Final answer
    x = 11,677.12

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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.