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Finding the Fourth Proportional to 18,212.13, 25,132.50 and 10,255.14

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Solution

The fourth proportional to 18,212.13, 25,132.50 and 10,255.14 is: 14,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.13 : 25,132.50 = 10,255.14 : x
  2. Step 2: Convert to fraction form
    18,212.13/25,132.50 = 10,255.14/x
  3. Step 3: Cross multiply
    18,212.13x = 25,132.50 × 10,255.14
  4. Step 4: Simplify right side
    18,212.13x = 257,737,306.05
  5. Step 5: Solve for x
    x = 257,737,306.05/18,212.13
  6. Step 6: Final answer
    x = 14,151.96

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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.