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Finding the Fourth Proportional to 18,198.92, 25,115.96 and 10,240.64

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Solution

The fourth proportional to 18,198.92, 25,115.96 and 10,240.64 is: 14,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.92 : 25,115.96 = 10,240.64 : x
  2. Step 2: Convert to fraction form
    18,198.92/25,115.96 = 10,240.64/x
  3. Step 3: Cross multiply
    18,198.92x = 25,115.96 × 10,240.64
  4. Step 4: Simplify right side
    18,198.92x = 257,203,504.61
  5. Step 5: Solve for x
    x = 257,203,504.61/18,198.92
  6. Step 6: Final answer
    x = 14,132.90

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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.