Home / 20,468.31-30,704.29-8,778.80

Finding the Fourth Proportional to 20,468.31, 30,704.29 and 8,778.80

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Solution

The fourth proportional to 20,468.31, 30,704.29 and 8,778.80 is: 13,168.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.31 : 30,704.29 = 8,778.80 : x
  2. Step 2: Convert to fraction form
    20,468.31/30,704.29 = 8,778.80/x
  3. Step 3: Cross multiply
    20,468.31x = 30,704.29 × 8,778.80
  4. Step 4: Simplify right side
    20,468.31x = 269,546,645.58
  5. Step 5: Solve for x
    x = 269,546,645.58/20,468.31
  6. Step 6: Final answer
    x = 13,168.97

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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.