Home / 10,459.20-15,690.75-3,439.61

Finding the Fourth Proportional to 10,459.20, 15,690.75 and 3,439.61

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Solution

The fourth proportional to 10,459.20, 15,690.75 and 3,439.61 is: 5,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,459.20 : 15,690.75 = 3,439.61 : x
  2. Step 2: Convert to fraction form
    10,459.20/15,690.75 = 3,439.61/x
  3. Step 3: Cross multiply
    10,459.20x = 15,690.75 × 3,439.61
  4. Step 4: Simplify right side
    10,459.20x = 53,970,060.61
  5. Step 5: Solve for x
    x = 53,970,060.61/10,459.20
  6. Step 6: Final answer
    x = 5,160.06

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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.