Home / 10,478.65-15,719.92-3,459.15

Finding the Fourth Proportional to 10,478.65, 15,719.92 and 3,459.15

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Solution

The fourth proportional to 10,478.65, 15,719.92 and 3,459.15 is: 5,189.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.65 : 15,719.92 = 3,459.15 : x
  2. Step 2: Convert to fraction form
    10,478.65/15,719.92 = 3,459.15/x
  3. Step 3: Cross multiply
    10,478.65x = 15,719.92 × 3,459.15
  4. Step 4: Simplify right side
    10,478.65x = 54,377,543.97
  5. Step 5: Solve for x
    x = 54,377,543.97/10,478.65
  6. Step 6: Final answer
    x = 5,189.37

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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.