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Finding the Fourth Proportional to 16,218.80, 22,381.95 and 8,766.80

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Solution

The fourth proportional to 16,218.80, 22,381.95 and 8,766.80 is: 12,098.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.80 : 22,381.95 = 8,766.80 : x
  2. Step 2: Convert to fraction form
    16,218.80/22,381.95 = 8,766.80/x
  3. Step 3: Cross multiply
    16,218.80x = 22,381.95 × 8,766.80
  4. Step 4: Simplify right side
    16,218.80x = 196,218,079.26
  5. Step 5: Solve for x
    x = 196,218,079.26/16,218.80
  6. Step 6: Final answer
    x = 12,098.19

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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.