Home / 20,179.76-30,269.30-9,078.59

Finding the Fourth Proportional to 20,179.76, 30,269.30 and 9,078.59

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Solution

The fourth proportional to 20,179.76, 30,269.30 and 9,078.59 is: 13,617.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.76 : 30,269.30 = 9,078.59 : x
  2. Step 2: Convert to fraction form
    20,179.76/30,269.30 = 9,078.59/x
  3. Step 3: Cross multiply
    20,179.76x = 30,269.30 × 9,078.59
  4. Step 4: Simplify right side
    20,179.76x = 274,802,367.55
  5. Step 5: Solve for x
    x = 274,802,367.55/20,179.76
  6. Step 6: Final answer
    x = 13,617.73

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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.