Home / 39,982.08-59,960.61-13,680.69

Finding the Fourth Proportional to 39,982.08, 59,960.61 and 13,680.69

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Solution

The fourth proportional to 39,982.08, 59,960.61 and 13,680.69 is: 20,516.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,982.08 : 59,960.61 = 13,680.69 : x
  2. Step 2: Convert to fraction form
    39,982.08/59,960.61 = 13,680.69/x
  3. Step 3: Cross multiply
    39,982.08x = 59,960.61 × 13,680.69
  4. Step 4: Simplify right side
    39,982.08x = 820,302,517.62
  5. Step 5: Solve for x
    x = 820,302,517.62/39,982.08
  6. Step 6: Final answer
    x = 20,516.75

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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.