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Finding the Fourth Proportional to 18,310.88, 27,443.82 and 8,436.44

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Solution

The fourth proportional to 18,310.88, 27,443.82 and 8,436.44 is: 12,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.88 : 27,443.82 = 8,436.44 : x
  2. Step 2: Convert to fraction form
    18,310.88/27,443.82 = 8,436.44/x
  3. Step 3: Cross multiply
    18,310.88x = 27,443.82 × 8,436.44
  4. Step 4: Simplify right side
    18,310.88x = 231,528,140.80
  5. Step 5: Solve for x
    x = 231,528,140.80/18,310.88
  6. Step 6: Final answer
    x = 12,644.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.