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Finding the Fourth Proportional to 12,040.61, 18,061.04 and 4,243.95

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Solution

The fourth proportional to 12,040.61, 18,061.04 and 4,243.95 is: 6,365.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,040.61 : 18,061.04 = 4,243.95 : x
  2. Step 2: Convert to fraction form
    12,040.61/18,061.04 = 4,243.95/x
  3. Step 3: Cross multiply
    12,040.61x = 18,061.04 × 4,243.95
  4. Step 4: Simplify right side
    12,040.61x = 76,650,161.32
  5. Step 5: Solve for x
    x = 76,650,161.32/12,040.61
  6. Step 6: Final answer
    x = 6,365.97

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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.