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Finding the Fourth Proportional to 20,469.03, 30,704.96 and 7,984.90

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Solution

The fourth proportional to 20,469.03, 30,704.96 and 7,984.90 is: 11,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.03 : 30,704.96 = 7,984.90 : x
  2. Step 2: Convert to fraction form
    20,469.03/30,704.96 = 7,984.90/x
  3. Step 3: Cross multiply
    20,469.03x = 30,704.96 × 7,984.90
  4. Step 4: Simplify right side
    20,469.03x = 245,176,035.10
  5. Step 5: Solve for x
    x = 245,176,035.10/20,469.03
  6. Step 6: Final answer
    x = 11,977.90

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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.