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Finding the Fourth Proportional to 18,028.75, 27,043.13 and 5,716.75

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Solution

The fourth proportional to 18,028.75, 27,043.13 and 5,716.75 is: 8,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,028.75 : 27,043.13 = 5,716.75 : x
  2. Step 2: Convert to fraction form
    18,028.75/27,043.13 = 5,716.75/x
  3. Step 3: Cross multiply
    18,028.75x = 27,043.13 × 5,716.75
  4. Step 4: Simplify right side
    18,028.75x = 154,598,813.43
  5. Step 5: Solve for x
    x = 154,598,813.43/18,028.75
  6. Step 6: Final answer
    x = 8,575.13

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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.