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Finding the Fourth Proportional to 13,704.55, 20,565.03 and 4,940.15

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Solution

The fourth proportional to 13,704.55, 20,565.03 and 4,940.15 is: 7,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.55 : 20,565.03 = 4,940.15 : x
  2. Step 2: Convert to fraction form
    13,704.55/20,565.03 = 4,940.15/x
  3. Step 3: Cross multiply
    13,704.55x = 20,565.03 × 4,940.15
  4. Step 4: Simplify right side
    13,704.55x = 101,594,332.95
  5. Step 5: Solve for x
    x = 101,594,332.95/13,704.55
  6. Step 6: Final answer
    x = 7,413.19

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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.