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Finding the Fourth Proportional to 12,040.97, 16,615.94 and 6,663.20

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Solution

The fourth proportional to 12,040.97, 16,615.94 and 6,663.20 is: 9,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,040.97 : 16,615.94 = 6,663.20 : x
  2. Step 2: Convert to fraction form
    12,040.97/16,615.94 = 6,663.20/x
  3. Step 3: Cross multiply
    12,040.97x = 16,615.94 × 6,663.20
  4. Step 4: Simplify right side
    12,040.97x = 110,715,215.01
  5. Step 5: Solve for x
    x = 110,715,215.01/12,040.97
  6. Step 6: Final answer
    x = 9,194.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.