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Finding the Fourth Proportional to 18,589.92, 25,487.76 and 18,257.28

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Solution

The fourth proportional to 18,589.92, 25,487.76 and 18,257.28 is: 25,031.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.92 : 25,487.76 = 18,257.28 : x
  2. Step 2: Convert to fraction form
    18,589.92/25,487.76 = 18,257.28/x
  3. Step 3: Cross multiply
    18,589.92x = 25,487.76 × 18,257.28
  4. Step 4: Simplify right side
    18,589.92x = 465,337,170.89
  5. Step 5: Solve for x
    x = 465,337,170.89/18,589.92
  6. Step 6: Final answer
    x = 25,031.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.