Home / 12,729.80-19,001.68-11,791.82

Finding the Fourth Proportional to 12,729.80, 19,001.68 and 11,791.82

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Solution

The fourth proportional to 12,729.80, 19,001.68 and 11,791.82 is: 17,601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.80 : 19,001.68 = 11,791.82 : x
  2. Step 2: Convert to fraction form
    12,729.80/19,001.68 = 11,791.82/x
  3. Step 3: Cross multiply
    12,729.80x = 19,001.68 × 11,791.82
  4. Step 4: Simplify right side
    12,729.80x = 224,064,390.26
  5. Step 5: Solve for x
    x = 224,064,390.26/12,729.80
  6. Step 6: Final answer
    x = 17,601.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.