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Finding the Fourth Proportional to 19,963.98, 29,940.86 and 5,920.73

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Solution

The fourth proportional to 19,963.98, 29,940.86 and 5,920.73 is: 8,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.98 : 29,940.86 = 5,920.73 : x
  2. Step 2: Convert to fraction form
    19,963.98/29,940.86 = 5,920.73/x
  3. Step 3: Cross multiply
    19,963.98x = 29,940.86 × 5,920.73
  4. Step 4: Simplify right side
    19,963.98x = 177,271,568.72
  5. Step 5: Solve for x
    x = 177,271,568.72/19,963.98
  6. Step 6: Final answer
    x = 8,879.57

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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.