Home / 39,838.80-59,743.92-13,179.90

Finding the Fourth Proportional to 39,838.80, 59,743.92 and 13,179.90

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Solution

The fourth proportional to 39,838.80, 59,743.92 and 13,179.90 is: 19,765.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,838.80 : 59,743.92 = 13,179.90 : x
  2. Step 2: Convert to fraction form
    39,838.80/59,743.92 = 13,179.90/x
  3. Step 3: Cross multiply
    39,838.80x = 59,743.92 × 13,179.90
  4. Step 4: Simplify right side
    39,838.80x = 787,418,891.21
  5. Step 5: Solve for x
    x = 787,418,891.21/39,838.80
  6. Step 6: Final answer
    x = 19,765.13

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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.