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Finding the Fourth Proportional to 18,174.72, 27,270.68 and 7,647.06

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Solution

The fourth proportional to 18,174.72, 27,270.68 and 7,647.06 is: 11,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,174.72 : 27,270.68 = 7,647.06 : x
  2. Step 2: Convert to fraction form
    18,174.72/27,270.68 = 7,647.06/x
  3. Step 3: Cross multiply
    18,174.72x = 27,270.68 × 7,647.06
  4. Step 4: Simplify right side
    18,174.72x = 208,540,526.20
  5. Step 5: Solve for x
    x = 208,540,526.20/18,174.72
  6. Step 6: Final answer
    x = 11,474.21

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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.