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Finding the Fourth Proportional to 16,021.11, 22,107.78 and 8,947.38

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Solution

The fourth proportional to 16,021.11, 22,107.78 and 8,947.38 is: 12,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,021.11 : 22,107.78 = 8,947.38 : x
  2. Step 2: Convert to fraction form
    16,021.11/22,107.78 = 8,947.38/x
  3. Step 3: Cross multiply
    16,021.11x = 22,107.78 × 8,947.38
  4. Step 4: Simplify right side
    16,021.11x = 197,806,708.62
  5. Step 5: Solve for x
    x = 197,806,708.62/16,021.11
  6. Step 6: Final answer
    x = 12,346.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.