Home / 20,941.51-31,413.79-7,793.88

Finding the Fourth Proportional to 20,941.51, 31,413.79 and 7,793.88

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Solution

The fourth proportional to 20,941.51, 31,413.79 and 7,793.88 is: 11,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.51 : 31,413.79 = 7,793.88 : x
  2. Step 2: Convert to fraction form
    20,941.51/31,413.79 = 7,793.88/x
  3. Step 3: Cross multiply
    20,941.51x = 31,413.79 × 7,793.88
  4. Step 4: Simplify right side
    20,941.51x = 244,835,309.61
  5. Step 5: Solve for x
    x = 244,835,309.61/20,941.51
  6. Step 6: Final answer
    x = 11,691.39

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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.