Home / 11,159.39-15,413.60-8,171.03

Finding the Fourth Proportional to 11,159.39, 15,413.60 and 8,171.03

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Solution

The fourth proportional to 11,159.39, 15,413.60 and 8,171.03 is: 11,286.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.39 : 15,413.60 = 8,171.03 : x
  2. Step 2: Convert to fraction form
    11,159.39/15,413.60 = 8,171.03/x
  3. Step 3: Cross multiply
    11,159.39x = 15,413.60 × 8,171.03
  4. Step 4: Simplify right side
    11,159.39x = 125,945,046.97
  5. Step 5: Solve for x
    x = 125,945,046.97/11,159.39
  6. Step 6: Final answer
    x = 11,286.01

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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.