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Finding the Fourth Proportional to 8,939.36, 13,413.48 and 4,012.48

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Solution

The fourth proportional to 8,939.36, 13,413.48 and 4,012.48 is: 6,020.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.36 : 13,413.48 = 4,012.48 : x
  2. Step 2: Convert to fraction form
    8,939.36/13,413.48 = 4,012.48/x
  3. Step 3: Cross multiply
    8,939.36x = 13,413.48 × 4,012.48
  4. Step 4: Simplify right side
    8,939.36x = 53,821,320.23
  5. Step 5: Solve for x
    x = 53,821,320.23/8,939.36
  6. Step 6: Final answer
    x = 6,020.71

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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.