Home / 20,028.72-30,042.98-8,179.97

Finding the Fourth Proportional to 20,028.72, 30,042.98 and 8,179.97

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Solution

The fourth proportional to 20,028.72, 30,042.98 and 8,179.97 is: 12,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.72 : 30,042.98 = 8,179.97 : x
  2. Step 2: Convert to fraction form
    20,028.72/30,042.98 = 8,179.97/x
  3. Step 3: Cross multiply
    20,028.72x = 30,042.98 × 8,179.97
  4. Step 4: Simplify right side
    20,028.72x = 245,750,484.00
  5. Step 5: Solve for x
    x = 245,750,484.00/20,028.72
  6. Step 6: Final answer
    x = 12,269.90

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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.