Home / 20,123.26-27,768.79-11,170.77

Finding the Fourth Proportional to 20,123.26, 27,768.79 and 11,170.77

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Solution

The fourth proportional to 20,123.26, 27,768.79 and 11,170.77 is: 15,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.26 : 27,768.79 = 11,170.77 : x
  2. Step 2: Convert to fraction form
    20,123.26/27,768.79 = 11,170.77/x
  3. Step 3: Cross multiply
    20,123.26x = 27,768.79 × 11,170.77
  4. Step 4: Simplify right side
    20,123.26x = 310,198,766.27
  5. Step 5: Solve for x
    x = 310,198,766.27/20,123.26
  6. Step 6: Final answer
    x = 15,414.94

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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.