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Finding the Fourth Proportional to 18,231.84, 27,343.20 and 5,083.68

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Solution

The fourth proportional to 18,231.84, 27,343.20 and 5,083.68 is: 7,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.84 : 27,343.20 = 5,083.68 : x
  2. Step 2: Convert to fraction form
    18,231.84/27,343.20 = 5,083.68/x
  3. Step 3: Cross multiply
    18,231.84x = 27,343.20 × 5,083.68
  4. Step 4: Simplify right side
    18,231.84x = 139,004,078.98
  5. Step 5: Solve for x
    x = 139,004,078.98/18,231.84
  6. Step 6: Final answer
    x = 7,624.25

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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.