Home / 18,949.68-28,413.36-7,843.92

Finding the Fourth Proportional to 18,949.68, 28,413.36 and 7,843.92

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Solution

The fourth proportional to 18,949.68, 28,413.36 and 7,843.92 is: 11,761.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.68 : 28,413.36 = 7,843.92 : x
  2. Step 2: Convert to fraction form
    18,949.68/28,413.36 = 7,843.92/x
  3. Step 3: Cross multiply
    18,949.68x = 28,413.36 × 7,843.92
  4. Step 4: Simplify right side
    18,949.68x = 222,872,122.77
  5. Step 5: Solve for x
    x = 222,872,122.77/18,949.68
  6. Step 6: Final answer
    x = 11,761.26

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1.5x scale

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.