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Finding the Fourth Proportional to 18,654.82, 27,981.28 and 6,967.15

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Solution

The fourth proportional to 18,654.82, 27,981.28 and 6,967.15 is: 10,450.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.82 : 27,981.28 = 6,967.15 : x
  2. Step 2: Convert to fraction form
    18,654.82/27,981.28 = 6,967.15/x
  3. Step 3: Cross multiply
    18,654.82x = 27,981.28 × 6,967.15
  4. Step 4: Simplify right side
    18,654.82x = 194,949,774.95
  5. Step 5: Solve for x
    x = 194,949,774.95/18,654.82
  6. Step 6: Final answer
    x = 10,450.37

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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.