Home / 31,413.35-43,348.14-18,665.97

Finding the Fourth Proportional to 31,413.35, 43,348.14 and 18,665.97

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Solution

The fourth proportional to 31,413.35, 43,348.14 and 18,665.97 is: 25,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.35 : 43,348.14 = 18,665.97 : x
  2. Step 2: Convert to fraction form
    31,413.35/43,348.14 = 18,665.97/x
  3. Step 3: Cross multiply
    31,413.35x = 43,348.14 × 18,665.97
  4. Step 4: Simplify right side
    31,413.35x = 809,135,080.80
  5. Step 5: Solve for x
    x = 809,135,080.80/31,413.35
  6. Step 6: Final answer
    x = 25,757.69

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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.