Home / 20,122.34-27,765.87-11,169.91

Finding the Fourth Proportional to 20,122.34, 27,765.87 and 11,169.91

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Solution

The fourth proportional to 20,122.34, 27,765.87 and 11,169.91 is: 15,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.34 : 27,765.87 = 11,169.91 : x
  2. Step 2: Convert to fraction form
    20,122.34/27,765.87 = 11,169.91/x
  3. Step 3: Cross multiply
    20,122.34x = 27,765.87 × 11,169.91
  4. Step 4: Simplify right side
    20,122.34x = 310,142,268.97
  5. Step 5: Solve for x
    x = 310,142,268.97/20,122.34
  6. Step 6: Final answer
    x = 15,412.83

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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.