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Finding the Fourth Proportional to 18,687.06, 28,037.34 and 9,326.34

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Solution

The fourth proportional to 18,687.06, 28,037.34 and 9,326.34 is: 13,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.06 : 28,037.34 = 9,326.34 : x
  2. Step 2: Convert to fraction form
    18,687.06/28,037.34 = 9,326.34/x
  3. Step 3: Cross multiply
    18,687.06x = 28,037.34 × 9,326.34
  4. Step 4: Simplify right side
    18,687.06x = 261,485,765.54
  5. Step 5: Solve for x
    x = 261,485,765.54/18,687.06
  6. Step 6: Final answer
    x = 13,992.88

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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.