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Finding the Fourth Proportional to 18,654.31, 27,984.20 and 5,504.97

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Solution

The fourth proportional to 18,654.31, 27,984.20 and 5,504.97 is: 8,258.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.31 : 27,984.20 = 5,504.97 : x
  2. Step 2: Convert to fraction form
    18,654.31/27,984.20 = 5,504.97/x
  3. Step 3: Cross multiply
    18,654.31x = 27,984.20 × 5,504.97
  4. Step 4: Simplify right side
    18,654.31x = 154,052,181.47
  5. Step 5: Solve for x
    x = 154,052,181.47/18,654.31
  6. Step 6: Final answer
    x = 8,258.26

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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.