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Finding the Fourth Proportional to 18,469.92, 25,488.36 and 10,086.42

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Solution

The fourth proportional to 18,469.92, 25,488.36 and 10,086.42 is: 13,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.92 : 25,488.36 = 10,086.42 : x
  2. Step 2: Convert to fraction form
    18,469.92/25,488.36 = 10,086.42/x
  3. Step 3: Cross multiply
    18,469.92x = 25,488.36 × 10,086.42
  4. Step 4: Simplify right side
    18,469.92x = 257,086,304.07
  5. Step 5: Solve for x
    x = 257,086,304.07/18,469.92
  6. Step 6: Final answer
    x = 13,919.19

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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.