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Finding the Fourth Proportional to 18,366.72, 27,539.13 and 7,275

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Solution

The fourth proportional to 18,366.72, 27,539.13 and 7,275 is: 10,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.72 : 27,539.13 = 7,275 : x
  2. Step 2: Convert to fraction form
    18,366.72/27,539.13 = 7,275/x
  3. Step 3: Cross multiply
    18,366.72x = 27,539.13 × 7,275
  4. Step 4: Simplify right side
    18,366.72x = 200,347,170.75
  5. Step 5: Solve for x
    x = 200,347,170.75/18,366.72
  6. Step 6: Final answer
    x = 10,908.16

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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.