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Finding the Fourth Proportional to 18,757.62, 28,136.12 and 4,906.62

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Solution

The fourth proportional to 18,757.62, 28,136.12 and 4,906.62 is: 7,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.62 : 28,136.12 = 4,906.62 : x
  2. Step 2: Convert to fraction form
    18,757.62/28,136.12 = 4,906.62/x
  3. Step 3: Cross multiply
    18,757.62x = 28,136.12 × 4,906.62
  4. Step 4: Simplify right side
    18,757.62x = 138,053,224.58
  5. Step 5: Solve for x
    x = 138,053,224.58/18,757.62
  6. Step 6: Final answer
    x = 7,359.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.