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Finding the Fourth Proportional to 18,163.87, 27,086.86 and 17,997.79

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Solution

The fourth proportional to 18,163.87, 27,086.86 and 17,997.79 is: 26,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.87 : 27,086.86 = 17,997.79 : x
  2. Step 2: Convert to fraction form
    18,163.87/27,086.86 = 17,997.79/x
  3. Step 3: Cross multiply
    18,163.87x = 27,086.86 × 17,997.79
  4. Step 4: Simplify right side
    18,163.87x = 487,503,618.04
  5. Step 5: Solve for x
    x = 487,503,618.04/18,163.87
  6. Step 6: Final answer
    x = 26,839.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.