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Finding the Fourth Proportional to 18,252.78, 27,376.03 and 5,102.11

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Solution

The fourth proportional to 18,252.78, 27,376.03 and 5,102.11 is: 7,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,252.78 : 27,376.03 = 5,102.11 : x
  2. Step 2: Convert to fraction form
    18,252.78/27,376.03 = 5,102.11/x
  3. Step 3: Cross multiply
    18,252.78x = 27,376.03 × 5,102.11
  4. Step 4: Simplify right side
    18,252.78x = 139,675,516.42
  5. Step 5: Solve for x
    x = 139,675,516.42/18,252.78
  6. Step 6: Final answer
    x = 7,652.29

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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.