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Finding the Fourth Proportional to 13,997.19, 20,996.19 and 3,608.94

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Solution

The fourth proportional to 13,997.19, 20,996.19 and 3,608.94 is: 5,413.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.19 : 20,996.19 = 3,608.94 : x
  2. Step 2: Convert to fraction form
    13,997.19/20,996.19 = 3,608.94/x
  3. Step 3: Cross multiply
    13,997.19x = 20,996.19 × 3,608.94
  4. Step 4: Simplify right side
    13,997.19x = 75,773,971.89
  5. Step 5: Solve for x
    x = 75,773,971.89/13,997.19
  6. Step 6: Final answer
    x = 5,413.51

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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.