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Finding the Fourth Proportional to 16,892.20, 25,338.30 and 16,661.80

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Solution

The fourth proportional to 16,892.20, 25,338.30 and 16,661.80 is: 24,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,892.20 : 25,338.30 = 16,661.80 : x
  2. Step 2: Convert to fraction form
    16,892.20/25,338.30 = 16,661.80/x
  3. Step 3: Cross multiply
    16,892.20x = 25,338.30 × 16,661.80
  4. Step 4: Simplify right side
    16,892.20x = 422,181,686.94
  5. Step 5: Solve for x
    x = 422,181,686.94/16,892.20
  6. Step 6: Final answer
    x = 24,992.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.