Home / 20,414.09-28,170.49-11,340.04

Finding the Fourth Proportional to 20,414.09, 28,170.49 and 11,340.04

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Solution

The fourth proportional to 20,414.09, 28,170.49 and 11,340.04 is: 15,648.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.09 : 28,170.49 = 11,340.04 : x
  2. Step 2: Convert to fraction form
    20,414.09/28,170.49 = 11,340.04/x
  3. Step 3: Cross multiply
    20,414.09x = 28,170.49 × 11,340.04
  4. Step 4: Simplify right side
    20,414.09x = 319,454,474.73
  5. Step 5: Solve for x
    x = 319,454,474.73/20,414.09
  6. Step 6: Final answer
    x = 15,648.73

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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.