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Finding the Fourth Proportional to 43,459.92, 65,220.96 and 18,517.44

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Solution

The fourth proportional to 43,459.92, 65,220.96 and 18,517.44 is: 27,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,459.92 : 65,220.96 = 18,517.44 : x
  2. Step 2: Convert to fraction form
    43,459.92/65,220.96 = 18,517.44/x
  3. Step 3: Cross multiply
    43,459.92x = 65,220.96 × 18,517.44
  4. Step 4: Simplify right side
    43,459.92x = 1,207,725,213.54
  5. Step 5: Solve for x
    x = 1,207,725,213.54/43,459.92
  6. Step 6: Final answer
    x = 27,789.40

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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.