Home / 20,116.92-27,761.42-11,164.60

Finding the Fourth Proportional to 20,116.92, 27,761.42 and 11,164.60

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Solution

The fourth proportional to 20,116.92, 27,761.42 and 11,164.60 is: 15,407.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.92 : 27,761.42 = 11,164.60 : x
  2. Step 2: Convert to fraction form
    20,116.92/27,761.42 = 11,164.60/x
  3. Step 3: Cross multiply
    20,116.92x = 27,761.42 × 11,164.60
  4. Step 4: Simplify right side
    20,116.92x = 309,945,149.73
  5. Step 5: Solve for x
    x = 309,945,149.73/20,116.92
  6. Step 6: Final answer
    x = 15,407.19

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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.