Home / 20,626.35-30,939.62-8,778.44

Finding the Fourth Proportional to 20,626.35, 30,939.62 and 8,778.44

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Solution

The fourth proportional to 20,626.35, 30,939.62 and 8,778.44 is: 13,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.35 : 30,939.62 = 8,778.44 : x
  2. Step 2: Convert to fraction form
    20,626.35/30,939.62 = 8,778.44/x
  3. Step 3: Cross multiply
    20,626.35x = 30,939.62 × 8,778.44
  4. Step 4: Simplify right side
    20,626.35x = 271,601,399.20
  5. Step 5: Solve for x
    x = 271,601,399.20/20,626.35
  6. Step 6: Final answer
    x = 13,167.69

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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.