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Finding the Fourth Proportional to 17,791.54, 26,687.78 and 7,791.14

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Solution

The fourth proportional to 17,791.54, 26,687.78 and 7,791.14 is: 11,686.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,791.54 : 26,687.78 = 7,791.14 : x
  2. Step 2: Convert to fraction form
    17,791.54/26,687.78 = 7,791.14/x
  3. Step 3: Cross multiply
    17,791.54x = 26,687.78 × 7,791.14
  4. Step 4: Simplify right side
    17,791.54x = 207,928,273.37
  5. Step 5: Solve for x
    x = 207,928,273.37/17,791.54
  6. Step 6: Final answer
    x = 11,686.92

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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.