Home / 20,910.96-28,857.17-12,414.79

Finding the Fourth Proportional to 20,910.96, 28,857.17 and 12,414.79

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Solution

The fourth proportional to 20,910.96, 28,857.17 and 12,414.79 is: 17,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.96 : 28,857.17 = 12,414.79 : x
  2. Step 2: Convert to fraction form
    20,910.96/28,857.17 = 12,414.79/x
  3. Step 3: Cross multiply
    20,910.96x = 28,857.17 × 12,414.79
  4. Step 4: Simplify right side
    20,910.96x = 358,255,705.54
  5. Step 5: Solve for x
    x = 358,255,705.54/20,910.96
  6. Step 6: Final answer
    x = 17,132.44

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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.