Home / 20,221.38-27,905.19-11,268.84

Finding the Fourth Proportional to 20,221.38, 27,905.19 and 11,268.84

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Solution

The fourth proportional to 20,221.38, 27,905.19 and 11,268.84 is: 15,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.38 : 27,905.19 = 11,268.84 : x
  2. Step 2: Convert to fraction form
    20,221.38/27,905.19 = 11,268.84/x
  3. Step 3: Cross multiply
    20,221.38x = 27,905.19 × 11,268.84
  4. Step 4: Simplify right side
    20,221.38x = 314,459,121.28
  5. Step 5: Solve for x
    x = 314,459,121.28/20,221.38
  6. Step 6: Final answer
    x = 15,550.82

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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.