Home / 20,082.38-27,712.49-11,129.36

Finding the Fourth Proportional to 20,082.38, 27,712.49 and 11,129.36

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Solution

The fourth proportional to 20,082.38, 27,712.49 and 11,129.36 is: 15,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.38 : 27,712.49 = 11,129.36 : x
  2. Step 2: Convert to fraction form
    20,082.38/27,712.49 = 11,129.36/x
  3. Step 3: Cross multiply
    20,082.38x = 27,712.49 × 11,129.36
  4. Step 4: Simplify right side
    20,082.38x = 308,422,083.50
  5. Step 5: Solve for x
    x = 308,422,083.50/20,082.38
  6. Step 6: Final answer
    x = 15,357.85

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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.