Home / 43,819.48-65,729.76-12,655

Finding the Fourth Proportional to 43,819.48, 65,729.76 and 12,655

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Solution

The fourth proportional to 43,819.48, 65,729.76 and 12,655 is: 18,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,819.48 : 65,729.76 = 12,655 : x
  2. Step 2: Convert to fraction form
    43,819.48/65,729.76 = 12,655/x
  3. Step 3: Cross multiply
    43,819.48x = 65,729.76 × 12,655
  4. Step 4: Simplify right side
    43,819.48x = 831,810,112.80
  5. Step 5: Solve for x
    x = 831,810,112.80/43,819.48
  6. Step 6: Final answer
    x = 18,982.66

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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.