Home / 20,082.27-27,713.11-11,129.70

Finding the Fourth Proportional to 20,082.27, 27,713.11 and 11,129.70

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Solution

The fourth proportional to 20,082.27, 27,713.11 and 11,129.70 is: 15,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.27 : 27,713.11 = 11,129.70 : x
  2. Step 2: Convert to fraction form
    20,082.27/27,713.11 = 11,129.70/x
  3. Step 3: Cross multiply
    20,082.27x = 27,713.11 × 11,129.70
  4. Step 4: Simplify right side
    20,082.27x = 308,438,406.15
  5. Step 5: Solve for x
    x = 308,438,406.15/20,082.27
  6. Step 6: Final answer
    x = 15,358.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.