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Finding the Fourth Proportional to 18,721, 25,834.98 and 10,337.50

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Solution

The fourth proportional to 18,721, 25,834.98 and 10,337.50 is: 14,265.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721 : 25,834.98 = 10,337.50 : x
  2. Step 2: Convert to fraction form
    18,721/25,834.98 = 10,337.50/x
  3. Step 3: Cross multiply
    18,721x = 25,834.98 × 10,337.50
  4. Step 4: Simplify right side
    18,721x = 267,069,105.75
  5. Step 5: Solve for x
    x = 267,069,105.75/18,721
  6. Step 6: Final answer
    x = 14,265.75

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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.