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Finding the Fourth Proportional to 18,173.26, 27,203.70 and 15,516.46

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Solution

The fourth proportional to 18,173.26, 27,203.70 and 15,516.46 is: 23,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,173.26 : 27,203.70 = 15,516.46 : x
  2. Step 2: Convert to fraction form
    18,173.26/27,203.70 = 15,516.46/x
  3. Step 3: Cross multiply
    18,173.26x = 27,203.70 × 15,516.46
  4. Step 4: Simplify right side
    18,173.26x = 422,105,122.90
  5. Step 5: Solve for x
    x = 422,105,122.90/18,173.26
  6. Step 6: Final answer
    x = 23,226.71

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1.5x scale

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.