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Finding the Fourth Proportional to 18,876, 28,314.12 and 6,564

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Solution

The fourth proportional to 18,876, 28,314.12 and 6,564 is: 9,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876 : 28,314.12 = 6,564 : x
  2. Step 2: Convert to fraction form
    18,876/28,314.12 = 6,564/x
  3. Step 3: Cross multiply
    18,876x = 28,314.12 × 6,564
  4. Step 4: Simplify right side
    18,876x = 185,853,883.68
  5. Step 5: Solve for x
    x = 185,853,883.68/18,876
  6. Step 6: Final answer
    x = 9,846.04

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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.