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Finding the Fourth Proportional to 22,486.79, 31,163.02 and 22,169.68

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Solution

The fourth proportional to 22,486.79, 31,163.02 and 22,169.68 is: 30,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,486.79 : 31,163.02 = 22,169.68 : x
  2. Step 2: Convert to fraction form
    22,486.79/31,163.02 = 22,169.68/x
  3. Step 3: Cross multiply
    22,486.79x = 31,163.02 × 22,169.68
  4. Step 4: Simplify right side
    22,486.79x = 690,874,047.90
  5. Step 5: Solve for x
    x = 690,874,047.90/22,486.79
  6. Step 6: Final answer
    x = 30,723.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.