Home / 20,400.05-30,600.42-5,608.88

Finding the Fourth Proportional to 20,400.05, 30,600.42 and 5,608.88

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Solution

The fourth proportional to 20,400.05, 30,600.42 and 5,608.88 is: 8,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.05 : 30,600.42 = 5,608.88 : x
  2. Step 2: Convert to fraction form
    20,400.05/30,600.42 = 5,608.88/x
  3. Step 3: Cross multiply
    20,400.05x = 30,600.42 × 5,608.88
  4. Step 4: Simplify right side
    20,400.05x = 171,634,083.73
  5. Step 5: Solve for x
    x = 171,634,083.73/20,400.05
  6. Step 6: Final answer
    x = 8,413.41

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1.5x scale

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.