Home / 31,729.05-43,766.19-20,413.26

Finding the Fourth Proportional to 31,729.05, 43,766.19 and 20,413.26

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Solution

The fourth proportional to 31,729.05, 43,766.19 and 20,413.26 is: 28,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.05 : 43,766.19 = 20,413.26 : x
  2. Step 2: Convert to fraction form
    31,729.05/43,766.19 = 20,413.26/x
  3. Step 3: Cross multiply
    31,729.05x = 43,766.19 × 20,413.26
  4. Step 4: Simplify right side
    31,729.05x = 893,410,615.68
  5. Step 5: Solve for x
    x = 893,410,615.68/31,729.05
  6. Step 6: Final answer
    x = 28,157.50

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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.