Home / 25,398.28-38,121.99-12,259.90

Finding the Fourth Proportional to 25,398.28, 38,121.99 and 12,259.90

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Solution

The fourth proportional to 25,398.28, 38,121.99 and 12,259.90 is: 18,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,398.28 : 38,121.99 = 12,259.90 : x
  2. Step 2: Convert to fraction form
    25,398.28/38,121.99 = 12,259.90/x
  3. Step 3: Cross multiply
    25,398.28x = 38,121.99 × 12,259.90
  4. Step 4: Simplify right side
    25,398.28x = 467,371,785.20
  5. Step 5: Solve for x
    x = 467,371,785.20/25,398.28
  6. Step 6: Final answer
    x = 18,401.71

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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.