Home / 20,103.11-27,741.92-11,150.38

Finding the Fourth Proportional to 20,103.11, 27,741.92 and 11,150.38

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Solution

The fourth proportional to 20,103.11, 27,741.92 and 11,150.38 is: 15,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.11 : 27,741.92 = 11,150.38 : x
  2. Step 2: Convert to fraction form
    20,103.11/27,741.92 = 11,150.38/x
  3. Step 3: Cross multiply
    20,103.11x = 27,741.92 × 11,150.38
  4. Step 4: Simplify right side
    20,103.11x = 309,332,949.93
  5. Step 5: Solve for x
    x = 309,332,949.93/20,103.11
  6. Step 6: Final answer
    x = 15,387.32

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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.