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Finding the Fourth Proportional to 18,489.25, 27,721.75 and 6,637.08

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Solution

The fourth proportional to 18,489.25, 27,721.75 and 6,637.08 is: 9,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.25 : 27,721.75 = 6,637.08 : x
  2. Step 2: Convert to fraction form
    18,489.25/27,721.75 = 6,637.08/x
  3. Step 3: Cross multiply
    18,489.25x = 27,721.75 × 6,637.08
  4. Step 4: Simplify right side
    18,489.25x = 183,991,472.49
  5. Step 5: Solve for x
    x = 183,991,472.49/18,489.25
  6. Step 6: Final answer
    x = 9,951.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.