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Finding the Fourth Proportional to 43,404.60, 65,106.90 and 12,239.85

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Solution

The fourth proportional to 43,404.60, 65,106.90 and 12,239.85 is: 18,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,404.60 : 65,106.90 = 12,239.85 : x
  2. Step 2: Convert to fraction form
    43,404.60/65,106.90 = 12,239.85/x
  3. Step 3: Cross multiply
    43,404.60x = 65,106.90 × 12,239.85
  4. Step 4: Simplify right side
    43,404.60x = 796,898,689.97
  5. Step 5: Solve for x
    x = 796,898,689.97/43,404.60
  6. Step 6: Final answer
    x = 18,359.78

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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.