Home / 13,719.38-20,578.92-3,331.13

Finding the Fourth Proportional to 13,719.38, 20,578.92 and 3,331.13

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Solution

The fourth proportional to 13,719.38, 20,578.92 and 3,331.13 is: 4,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.38 : 20,578.92 = 3,331.13 : x
  2. Step 2: Convert to fraction form
    13,719.38/20,578.92 = 3,331.13/x
  3. Step 3: Cross multiply
    13,719.38x = 20,578.92 × 3,331.13
  4. Step 4: Simplify right side
    13,719.38x = 68,551,057.78
  5. Step 5: Solve for x
    x = 68,551,057.78/13,719.38
  6. Step 6: Final answer
    x = 4,996.66

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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.