Home / 39,815.60-59,732.04-12,112.88

Finding the Fourth Proportional to 39,815.60, 59,732.04 and 12,112.88

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Solution

The fourth proportional to 39,815.60, 59,732.04 and 12,112.88 is: 18,171.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.60 : 59,732.04 = 12,112.88 : x
  2. Step 2: Convert to fraction form
    39,815.60/59,732.04 = 12,112.88/x
  3. Step 3: Cross multiply
    39,815.60x = 59,732.04 × 12,112.88
  4. Step 4: Simplify right side
    39,815.60x = 723,526,734.02
  5. Step 5: Solve for x
    x = 723,526,734.02/39,815.60
  6. Step 6: Final answer
    x = 18,171.94

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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.