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Finding the Fourth Proportional to 16,218.90, 22,382.07 and 8,766.90

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Solution

The fourth proportional to 16,218.90, 22,382.07 and 8,766.90 is: 12,098.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.90 : 22,382.07 = 8,766.90 : x
  2. Step 2: Convert to fraction form
    16,218.90/22,382.07 = 8,766.90/x
  3. Step 3: Cross multiply
    16,218.90x = 22,382.07 × 8,766.90
  4. Step 4: Simplify right side
    16,218.90x = 196,221,369.48
  5. Step 5: Solve for x
    x = 196,221,369.48/16,218.90
  6. Step 6: Final answer
    x = 12,098.32

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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.