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Finding the Fourth Proportional to 18,660, 27,990 and 6,348

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Solution

The fourth proportional to 18,660, 27,990 and 6,348 is: 9,522

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660 : 27,990 = 6,348 : x
  2. Step 2: Convert to fraction form
    18,660/27,990 = 6,348/x
  3. Step 3: Cross multiply
    18,660x = 27,990 × 6,348
  4. Step 4: Simplify right side
    18,660x = 177,680,520
  5. Step 5: Solve for x
    x = 177,680,520/18,660
  6. Step 6: Final answer
    x = 9,522

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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.