Home / 20,413.92-28,171.24-11,464.34

Finding the Fourth Proportional to 20,413.92, 28,171.24 and 11,464.34

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Solution

The fourth proportional to 20,413.92, 28,171.24 and 11,464.34 is: 15,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.92 : 28,171.24 = 11,464.34 : x
  2. Step 2: Convert to fraction form
    20,413.92/28,171.24 = 11,464.34/x
  3. Step 3: Cross multiply
    20,413.92x = 28,171.24 × 11,464.34
  4. Step 4: Simplify right side
    20,413.92x = 322,964,568.55
  5. Step 5: Solve for x
    x = 322,964,568.55/20,413.92
  6. Step 6: Final answer
    x = 15,820.80

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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.