Home / 20,123.67-27,769.42-11,170.64

Finding the Fourth Proportional to 20,123.67, 27,769.42 and 11,170.64

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Solution

The fourth proportional to 20,123.67, 27,769.42 and 11,170.64 is: 15,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.67 : 27,769.42 = 11,170.64 : x
  2. Step 2: Convert to fraction form
    20,123.67/27,769.42 = 11,170.64/x
  3. Step 3: Cross multiply
    20,123.67x = 27,769.42 × 11,170.64
  4. Step 4: Simplify right side
    20,123.67x = 310,202,193.83
  5. Step 5: Solve for x
    x = 310,202,193.83/20,123.67
  6. Step 6: Final answer
    x = 15,414.79

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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.