Home / 20,489.06-28,273.95-11,413.94

Finding the Fourth Proportional to 20,489.06, 28,273.95 and 11,413.94

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Solution

The fourth proportional to 20,489.06, 28,273.95 and 11,413.94 is: 15,750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.06 : 28,273.95 = 11,413.94 : x
  2. Step 2: Convert to fraction form
    20,489.06/28,273.95 = 11,413.94/x
  3. Step 3: Cross multiply
    20,489.06x = 28,273.95 × 11,413.94
  4. Step 4: Simplify right side
    20,489.06x = 322,717,168.86
  5. Step 5: Solve for x
    x = 322,717,168.86/20,489.06
  6. Step 6: Final answer
    x = 15,750.71

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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.