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Finding the Fourth Proportional to 16,138.40, 22,269.84 and 8,968.48

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Solution

The fourth proportional to 16,138.40, 22,269.84 and 8,968.48 is: 12,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,138.40 : 22,269.84 = 8,968.48 : x
  2. Step 2: Convert to fraction form
    16,138.40/22,269.84 = 8,968.48/x
  3. Step 3: Cross multiply
    16,138.40x = 22,269.84 × 8,968.48
  4. Step 4: Simplify right side
    16,138.40x = 199,726,614.64
  5. Step 5: Solve for x
    x = 199,726,614.64/16,138.40
  6. Step 6: Final answer
    x = 12,375.86

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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.