Home / 39,696.98-54,778.40-21,791.92

Finding the Fourth Proportional to 39,696.98, 54,778.40 and 21,791.92

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Solution

The fourth proportional to 39,696.98, 54,778.40 and 21,791.92 is: 30,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.98 : 54,778.40 = 21,791.92 : x
  2. Step 2: Convert to fraction form
    39,696.98/54,778.40 = 21,791.92/x
  3. Step 3: Cross multiply
    39,696.98x = 54,778.40 × 21,791.92
  4. Step 4: Simplify right side
    39,696.98x = 1,193,726,510.53
  5. Step 5: Solve for x
    x = 1,193,726,510.53/39,696.98
  6. Step 6: Final answer
    x = 30,070.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.