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Finding the Fourth Proportional to 28,942.92, 43,413.92 and 9,221.34

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Solution

The fourth proportional to 28,942.92, 43,413.92 and 9,221.34 is: 13,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.92 : 43,413.92 = 9,221.34 : x
  2. Step 2: Convert to fraction form
    28,942.92/43,413.92 = 9,221.34/x
  3. Step 3: Cross multiply
    28,942.92x = 43,413.92 × 9,221.34
  4. Step 4: Simplify right side
    28,942.92x = 400,334,470.95
  5. Step 5: Solve for x
    x = 400,334,470.95/28,942.92
  6. Step 6: Final answer
    x = 13,831.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.