Home / 20,115.73-27,761.45-11,164.96

Finding the Fourth Proportional to 20,115.73, 27,761.45 and 11,164.96

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Solution

The fourth proportional to 20,115.73, 27,761.45 and 11,164.96 is: 15,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.73 : 27,761.45 = 11,164.96 : x
  2. Step 2: Convert to fraction form
    20,115.73/27,761.45 = 11,164.96/x
  3. Step 3: Cross multiply
    20,115.73x = 27,761.45 × 11,164.96
  4. Step 4: Simplify right side
    20,115.73x = 309,955,353.56
  5. Step 5: Solve for x
    x = 309,955,353.56/20,115.73
  6. Step 6: Final answer
    x = 15,408.61

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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.