Home / 10,387.20-15,589.08-5,459.73

Finding the Fourth Proportional to 10,387.20, 15,589.08 and 5,459.73

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Solution

The fourth proportional to 10,387.20, 15,589.08 and 5,459.73 is: 8,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.20 : 15,589.08 = 5,459.73 : x
  2. Step 2: Convert to fraction form
    10,387.20/15,589.08 = 5,459.73/x
  3. Step 3: Cross multiply
    10,387.20x = 15,589.08 × 5,459.73
  4. Step 4: Simplify right side
    10,387.20x = 85,112,167.75
  5. Step 5: Solve for x
    x = 85,112,167.75/10,387.20
  6. Step 6: Final answer
    x = 8,193.95

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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.