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Finding the Fourth Proportional to 18,115.92, 27,173.52 and 10,308

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Solution

The fourth proportional to 18,115.92, 27,173.52 and 10,308 is: 15,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.92 : 27,173.52 = 10,308 : x
  2. Step 2: Convert to fraction form
    18,115.92/27,173.52 = 10,308/x
  3. Step 3: Cross multiply
    18,115.92x = 27,173.52 × 10,308
  4. Step 4: Simplify right side
    18,115.92x = 280,104,644.16
  5. Step 5: Solve for x
    x = 280,104,644.16/18,115.92
  6. Step 6: Final answer
    x = 15,461.80

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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.