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Finding the Fourth Proportional to 18,508.80, 27,766.96 and 6,822.08

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Solution

The fourth proportional to 18,508.80, 27,766.96 and 6,822.08 is: 10,234.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.80 : 27,766.96 = 6,822.08 : x
  2. Step 2: Convert to fraction form
    18,508.80/27,766.96 = 6,822.08/x
  3. Step 3: Cross multiply
    18,508.80x = 27,766.96 × 6,822.08
  4. Step 4: Simplify right side
    18,508.80x = 189,428,422.48
  5. Step 5: Solve for x
    x = 189,428,422.48/18,508.80
  6. Step 6: Final answer
    x = 10,234.51

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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.