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Finding the Fourth Proportional to 18,201.72, 27,291.36 and 8,344.02

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Solution

The fourth proportional to 18,201.72, 27,291.36 and 8,344.02 is: 12,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,201.72 : 27,291.36 = 8,344.02 : x
  2. Step 2: Convert to fraction form
    18,201.72/27,291.36 = 8,344.02/x
  3. Step 3: Cross multiply
    18,201.72x = 27,291.36 × 8,344.02
  4. Step 4: Simplify right side
    18,201.72x = 227,719,653.67
  5. Step 5: Solve for x
    x = 227,719,653.67/18,201.72
  6. Step 6: Final answer
    x = 12,510.89

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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.