Home / 20,456.11-30,684.17-5,665.03

Finding the Fourth Proportional to 20,456.11, 30,684.17 and 5,665.03

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Solution

The fourth proportional to 20,456.11, 30,684.17 and 5,665.03 is: 8,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.11 : 30,684.17 = 5,665.03 : x
  2. Step 2: Convert to fraction form
    20,456.11/30,684.17 = 5,665.03/x
  3. Step 3: Cross multiply
    20,456.11x = 30,684.17 × 5,665.03
  4. Step 4: Simplify right side
    20,456.11x = 173,826,638.54
  5. Step 5: Solve for x
    x = 173,826,638.54/20,456.11
  6. Step 6: Final answer
    x = 8,497.54

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.