Home / 20,091.28-27,726.66-12,131.92

Finding the Fourth Proportional to 20,091.28, 27,726.66 and 12,131.92

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Solution

The fourth proportional to 20,091.28, 27,726.66 and 12,131.92 is: 16,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.28 : 27,726.66 = 12,131.92 : x
  2. Step 2: Convert to fraction form
    20,091.28/27,726.66 = 12,131.92/x
  3. Step 3: Cross multiply
    20,091.28x = 27,726.66 × 12,131.92
  4. Step 4: Simplify right side
    20,091.28x = 336,377,620.99
  5. Step 5: Solve for x
    x = 336,377,620.99/20,091.28
  6. Step 6: Final answer
    x = 16,742.47

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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.