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Finding the Fourth Proportional to 28,092.56, 38,767.56 and 15,517.28

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Solution

The fourth proportional to 28,092.56, 38,767.56 and 15,517.28 is: 21,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.56 : 38,767.56 = 15,517.28 : x
  2. Step 2: Convert to fraction form
    28,092.56/38,767.56 = 15,517.28/x
  3. Step 3: Cross multiply
    28,092.56x = 38,767.56 × 15,517.28
  4. Step 4: Simplify right side
    28,092.56x = 601,567,083.44
  5. Step 5: Solve for x
    x = 601,567,083.44/28,092.56
  6. Step 6: Final answer
    x = 21,413.75

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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.