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Finding the Fourth Proportional to 16,918.80, 25,387.49 and 8,599.54

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Solution

The fourth proportional to 16,918.80, 25,387.49 and 8,599.54 is: 12,904.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.80 : 25,387.49 = 8,599.54 : x
  2. Step 2: Convert to fraction form
    16,918.80/25,387.49 = 8,599.54/x
  3. Step 3: Cross multiply
    16,918.80x = 25,387.49 × 8,599.54
  4. Step 4: Simplify right side
    16,918.80x = 218,320,735.75
  5. Step 5: Solve for x
    x = 218,320,735.75/16,918.80
  6. Step 6: Final answer
    x = 12,904.03

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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.