Home / 20,753.82-28,631-12,793.14

Finding the Fourth Proportional to 20,753.82, 28,631 and 12,793.14

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Solution

The fourth proportional to 20,753.82, 28,631 and 12,793.14 is: 17,648.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.82 : 28,631 = 12,793.14 : x
  2. Step 2: Convert to fraction form
    20,753.82/28,631 = 12,793.14/x
  3. Step 3: Cross multiply
    20,753.82x = 28,631 × 12,793.14
  4. Step 4: Simplify right side
    20,753.82x = 366,280,391.34
  5. Step 5: Solve for x
    x = 366,280,391.34/20,753.82
  6. Step 6: Final answer
    x = 17,648.82

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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.