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Finding the Fourth Proportional to 11,791.69, 17,687.73 and 9,440.80

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Solution

The fourth proportional to 11,791.69, 17,687.73 and 9,440.80 is: 14,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.69 : 17,687.73 = 9,440.80 : x
  2. Step 2: Convert to fraction form
    11,791.69/17,687.73 = 9,440.80/x
  3. Step 3: Cross multiply
    11,791.69x = 17,687.73 × 9,440.80
  4. Step 4: Simplify right side
    11,791.69x = 166,986,321.38
  5. Step 5: Solve for x
    x = 166,986,321.38/11,791.69
  6. Step 6: Final answer
    x = 14,161.36

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1.5x scale

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.