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Finding the Fourth Proportional to 22,791.78, 34,028.51 and 19,668.42

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Solution

The fourth proportional to 22,791.78, 34,028.51 and 19,668.42 is: 29,365.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,791.78 : 34,028.51 = 19,668.42 : x
  2. Step 2: Convert to fraction form
    22,791.78/34,028.51 = 19,668.42/x
  3. Step 3: Cross multiply
    22,791.78x = 34,028.51 × 19,668.42
  4. Step 4: Simplify right side
    22,791.78x = 669,286,928.31
  5. Step 5: Solve for x
    x = 669,286,928.31/22,791.78
  6. Step 6: Final answer
    x = 29,365.28

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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.