Home / 20,162.60-30,251.10-8,479.40

Finding the Fourth Proportional to 20,162.60, 30,251.10 and 8,479.40

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Solution

The fourth proportional to 20,162.60, 30,251.10 and 8,479.40 is: 12,722.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.60 : 30,251.10 = 8,479.40 : x
  2. Step 2: Convert to fraction form
    20,162.60/30,251.10 = 8,479.40/x
  3. Step 3: Cross multiply
    20,162.60x = 30,251.10 × 8,479.40
  4. Step 4: Simplify right side
    20,162.60x = 256,511,177.34
  5. Step 5: Solve for x
    x = 256,511,177.34/20,162.60
  6. Step 6: Final answer
    x = 12,722.13

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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.