Home / 20,844.80-28,764.96-11,413.20

Finding the Fourth Proportional to 20,844.80, 28,764.96 and 11,413.20

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Solution

The fourth proportional to 20,844.80, 28,764.96 and 11,413.20 is: 15,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.80 : 28,764.96 = 11,413.20 : x
  2. Step 2: Convert to fraction form
    20,844.80/28,764.96 = 11,413.20/x
  3. Step 3: Cross multiply
    20,844.80x = 28,764.96 × 11,413.20
  4. Step 4: Simplify right side
    20,844.80x = 328,300,241.47
  5. Step 5: Solve for x
    x = 328,300,241.47/20,844.80
  6. Step 6: Final answer
    x = 15,749.74

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1.5x scale

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.