Home / 10,481.20-15,722.88-3,459.16

Finding the Fourth Proportional to 10,481.20, 15,722.88 and 3,459.16

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Solution

The fourth proportional to 10,481.20, 15,722.88 and 3,459.16 is: 5,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.20 : 15,722.88 = 3,459.16 : x
  2. Step 2: Convert to fraction form
    10,481.20/15,722.88 = 3,459.16/x
  3. Step 3: Cross multiply
    10,481.20x = 15,722.88 × 3,459.16
  4. Step 4: Simplify right side
    10,481.20x = 54,387,957.58
  5. Step 5: Solve for x
    x = 54,387,957.58/10,481.20
  6. Step 6: Final answer
    x = 5,189.10

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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.