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Finding the Fourth Proportional to 17,991, 26,996.22 and 8,757

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Solution

The fourth proportional to 17,991, 26,996.22 and 8,757 is: 13,140.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991 : 26,996.22 = 8,757 : x
  2. Step 2: Convert to fraction form
    17,991/26,996.22 = 8,757/x
  3. Step 3: Cross multiply
    17,991x = 26,996.22 × 8,757
  4. Step 4: Simplify right side
    17,991x = 236,405,898.54
  5. Step 5: Solve for x
    x = 236,405,898.54/17,991
  6. Step 6: Final answer
    x = 13,140.23

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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.