Home / 20,179.74-30,269.61-6,139.74

Finding the Fourth Proportional to 20,179.74, 30,269.61 and 6,139.74

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Solution

The fourth proportional to 20,179.74, 30,269.61 and 6,139.74 is: 9,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.74 : 30,269.61 = 6,139.74 : x
  2. Step 2: Convert to fraction form
    20,179.74/30,269.61 = 6,139.74/x
  3. Step 3: Cross multiply
    20,179.74x = 30,269.61 × 6,139.74
  4. Step 4: Simplify right side
    20,179.74x = 185,847,535.30
  5. Step 5: Solve for x
    x = 185,847,535.30/20,179.74
  6. Step 6: Final answer
    x = 9,209.61

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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.