Home / 20,091.19-27,723.27-11,138.61

Finding the Fourth Proportional to 20,091.19, 27,723.27 and 11,138.61

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Solution

The fourth proportional to 20,091.19, 27,723.27 and 11,138.61 is: 15,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.19 : 27,723.27 = 11,138.61 : x
  2. Step 2: Convert to fraction form
    20,091.19/27,723.27 = 11,138.61/x
  3. Step 3: Cross multiply
    20,091.19x = 27,723.27 × 11,138.61
  4. Step 4: Simplify right side
    20,091.19x = 308,798,692.45
  5. Step 5: Solve for x
    x = 308,798,692.45/20,091.19
  6. Step 6: Final answer
    x = 15,369.86

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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.