Home / 20,469.75-30,704.63-8,166.39

Finding the Fourth Proportional to 20,469.75, 30,704.63 and 8,166.39

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Solution

The fourth proportional to 20,469.75, 30,704.63 and 8,166.39 is: 12,249.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.75 : 30,704.63 = 8,166.39 : x
  2. Step 2: Convert to fraction form
    20,469.75/30,704.63 = 8,166.39/x
  3. Step 3: Cross multiply
    20,469.75x = 30,704.63 × 8,166.39
  4. Step 4: Simplify right side
    20,469.75x = 250,745,983.39
  5. Step 5: Solve for x
    x = 250,745,983.39/20,469.75
  6. Step 6: Final answer
    x = 12,249.59

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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.