Home / 43,321.20-64,984.12-13,741.36

Finding the Fourth Proportional to 43,321.20, 64,984.12 and 13,741.36

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Solution

The fourth proportional to 43,321.20, 64,984.12 and 13,741.36 is: 20,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,321.20 : 64,984.12 = 13,741.36 : x
  2. Step 2: Convert to fraction form
    43,321.20/64,984.12 = 13,741.36/x
  3. Step 3: Cross multiply
    43,321.20x = 64,984.12 × 13,741.36
  4. Step 4: Simplify right side
    43,321.20x = 892,970,187.20
  5. Step 5: Solve for x
    x = 892,970,187.20/43,321.20
  6. Step 6: Final answer
    x = 20,612.78

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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.