Home / 20,843.86-28,766.46-11,413.84

Finding the Fourth Proportional to 20,843.86, 28,766.46 and 11,413.84

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Solution

The fourth proportional to 20,843.86, 28,766.46 and 11,413.84 is: 15,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.86 : 28,766.46 = 11,413.84 : x
  2. Step 2: Convert to fraction form
    20,843.86/28,766.46 = 11,413.84/x
  3. Step 3: Cross multiply
    20,843.86x = 28,766.46 × 11,413.84
  4. Step 4: Simplify right side
    20,843.86x = 328,335,771.81
  5. Step 5: Solve for x
    x = 328,335,771.81/20,843.86
  6. Step 6: Final answer
    x = 15,752.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.