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Finding the Fourth Proportional to 18,462.52, 25,478.76 and 10,079.20

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Solution

The fourth proportional to 18,462.52, 25,478.76 and 10,079.20 is: 13,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.52 : 25,478.76 = 10,079.20 : x
  2. Step 2: Convert to fraction form
    18,462.52/25,478.76 = 10,079.20/x
  3. Step 3: Cross multiply
    18,462.52x = 25,478.76 × 10,079.20
  4. Step 4: Simplify right side
    18,462.52x = 256,805,517.79
  5. Step 5: Solve for x
    x = 256,805,517.79/18,462.52
  6. Step 6: Final answer
    x = 13,909.56

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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.