Home / 39,132.80-58,731.60-18,105.20

Finding the Fourth Proportional to 39,132.80, 58,731.60 and 18,105.20

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Solution

The fourth proportional to 39,132.80, 58,731.60 and 18,105.20 is: 27,172.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,132.80 : 58,731.60 = 18,105.20 : x
  2. Step 2: Convert to fraction form
    39,132.80/58,731.60 = 18,105.20/x
  3. Step 3: Cross multiply
    39,132.80x = 58,731.60 × 18,105.20
  4. Step 4: Simplify right side
    39,132.80x = 1,063,347,364.32
  5. Step 5: Solve for x
    x = 1,063,347,364.32/39,132.80
  6. Step 6: Final answer
    x = 27,172.79

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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.