Home / 20,600.25-28,428.38-11,168.83

Finding the Fourth Proportional to 20,600.25, 28,428.38 and 11,168.83

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Solution

The fourth proportional to 20,600.25, 28,428.38 and 11,168.83 is: 15,413.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.25 : 28,428.38 = 11,168.83 : x
  2. Step 2: Convert to fraction form
    20,600.25/28,428.38 = 11,168.83/x
  3. Step 3: Cross multiply
    20,600.25x = 28,428.38 × 11,168.83
  4. Step 4: Simplify right side
    20,600.25x = 317,511,743.40
  5. Step 5: Solve for x
    x = 317,511,743.40/20,600.25
  6. Step 6: Final answer
    x = 15,413.00

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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.