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Finding the Fourth Proportional to 18,606.36, 27,912.56 and 6,122.76

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Solution

The fourth proportional to 18,606.36, 27,912.56 and 6,122.76 is: 9,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.36 : 27,912.56 = 6,122.76 : x
  2. Step 2: Convert to fraction form
    18,606.36/27,912.56 = 6,122.76/x
  3. Step 3: Cross multiply
    18,606.36x = 27,912.56 × 6,122.76
  4. Step 4: Simplify right side
    18,606.36x = 170,901,905.87
  5. Step 5: Solve for x
    x = 170,901,905.87/18,606.36
  6. Step 6: Final answer
    x = 9,185.13

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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.