Home / 20,179.40-30,279.90-8,493.80

Finding the Fourth Proportional to 20,179.40, 30,279.90 and 8,493.80

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Solution

The fourth proportional to 20,179.40, 30,279.90 and 8,493.80 is: 12,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.40 : 30,279.90 = 8,493.80 : x
  2. Step 2: Convert to fraction form
    20,179.40/30,279.90 = 8,493.80/x
  3. Step 3: Cross multiply
    20,179.40x = 30,279.90 × 8,493.80
  4. Step 4: Simplify right side
    20,179.40x = 257,191,414.62
  5. Step 5: Solve for x
    x = 257,191,414.62/20,179.40
  6. Step 6: Final answer
    x = 12,745.25

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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.