Home / 13,383.28-20,082.96-7,147.90

Finding the Fourth Proportional to 13,383.28, 20,082.96 and 7,147.90

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Solution

The fourth proportional to 13,383.28, 20,082.96 and 7,147.90 is: 10,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.28 : 20,082.96 = 7,147.90 : x
  2. Step 2: Convert to fraction form
    13,383.28/20,082.96 = 7,147.90/x
  3. Step 3: Cross multiply
    13,383.28x = 20,082.96 × 7,147.90
  4. Step 4: Simplify right side
    13,383.28x = 143,550,989.78
  5. Step 5: Solve for x
    x = 143,550,989.78/13,383.28
  6. Step 6: Final answer
    x = 10,726.14

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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.