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Finding the Fourth Proportional to 18,385.92, 25,372.62 and 10,002.42

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Solution

The fourth proportional to 18,385.92, 25,372.62 and 10,002.42 is: 13,803.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.92 : 25,372.62 = 10,002.42 : x
  2. Step 2: Convert to fraction form
    18,385.92/25,372.62 = 10,002.42/x
  3. Step 3: Cross multiply
    18,385.92x = 25,372.62 × 10,002.42
  4. Step 4: Simplify right side
    18,385.92x = 253,787,601.74
  5. Step 5: Solve for x
    x = 253,787,601.74/18,385.92
  6. Step 6: Final answer
    x = 13,803.37

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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.