Home / 20,844.80-28,765.20-11,413.04

Finding the Fourth Proportional to 20,844.80, 28,765.20 and 11,413.04

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Solution

The fourth proportional to 20,844.80, 28,765.20 and 11,413.04 is: 15,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.80 : 28,765.20 = 11,413.04 : x
  2. Step 2: Convert to fraction form
    20,844.80/28,765.20 = 11,413.04/x
  3. Step 3: Cross multiply
    20,844.80x = 28,765.20 × 11,413.04
  4. Step 4: Simplify right side
    20,844.80x = 328,298,378.21
  5. Step 5: Solve for x
    x = 328,298,378.21/20,844.80
  6. Step 6: Final answer
    x = 15,749.65

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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.