Home / 28,255.44-42,413.82-21,255.42

Finding the Fourth Proportional to 28,255.44, 42,413.82 and 21,255.42

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Solution

The fourth proportional to 28,255.44, 42,413.82 and 21,255.42 is: 31,906.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255.44 : 42,413.82 = 21,255.42 : x
  2. Step 2: Convert to fraction form
    28,255.44/42,413.82 = 21,255.42/x
  3. Step 3: Cross multiply
    28,255.44x = 42,413.82 × 21,255.42
  4. Step 4: Simplify right side
    28,255.44x = 901,523,557.90
  5. Step 5: Solve for x
    x = 901,523,557.90/28,255.44
  6. Step 6: Final answer
    x = 31,906.19

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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.