Home / 20,319.62-30,480.44-6,469.70

Finding the Fourth Proportional to 20,319.62, 30,480.44 and 6,469.70

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Solution

The fourth proportional to 20,319.62, 30,480.44 and 6,469.70 is: 9,704.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.62 : 30,480.44 = 6,469.70 : x
  2. Step 2: Convert to fraction form
    20,319.62/30,480.44 = 6,469.70/x
  3. Step 3: Cross multiply
    20,319.62x = 30,480.44 × 6,469.70
  4. Step 4: Simplify right side
    20,319.62x = 197,199,166.44
  5. Step 5: Solve for x
    x = 197,199,166.44/20,319.62
  6. Step 6: Final answer
    x = 9,704.87

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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.