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Finding the Fourth Proportional to 16,791.66, 23,169.78 and 9,716.58

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Solution

The fourth proportional to 16,791.66, 23,169.78 and 9,716.58 is: 13,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,791.66 : 23,169.78 = 9,716.58 : x
  2. Step 2: Convert to fraction form
    16,791.66/23,169.78 = 9,716.58/x
  3. Step 3: Cross multiply
    16,791.66x = 23,169.78 × 9,716.58
  4. Step 4: Simplify right side
    16,791.66x = 225,131,020.95
  5. Step 5: Solve for x
    x = 225,131,020.95/16,791.66
  6. Step 6: Final answer
    x = 13,407.31

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