Home / 20,759.36-31,141.04-7,608.56

Finding the Fourth Proportional to 20,759.36, 31,141.04 and 7,608.56

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Solution

The fourth proportional to 20,759.36, 31,141.04 and 7,608.56 is: 11,413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.36 : 31,141.04 = 7,608.56 : x
  2. Step 2: Convert to fraction form
    20,759.36/31,141.04 = 7,608.56/x
  3. Step 3: Cross multiply
    20,759.36x = 31,141.04 × 7,608.56
  4. Step 4: Simplify right side
    20,759.36x = 236,938,471.30
  5. Step 5: Solve for x
    x = 236,938,471.30/20,759.36
  6. Step 6: Final answer
    x = 11,413.57

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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.