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Finding the Fourth Proportional to 18,122.74, 25,005.92 and 10,951.20

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Solution

The fourth proportional to 18,122.74, 25,005.92 and 10,951.20 is: 15,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.74 : 25,005.92 = 10,951.20 : x
  2. Step 2: Convert to fraction form
    18,122.74/25,005.92 = 10,951.20/x
  3. Step 3: Cross multiply
    18,122.74x = 25,005.92 × 10,951.20
  4. Step 4: Simplify right side
    18,122.74x = 273,844,776.35
  5. Step 5: Solve for x
    x = 273,844,776.35/18,122.74
  6. Step 6: Final answer
    x = 15,110.56

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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.