Home / 20,604.38-28,413.18-16,815.33

Finding the Fourth Proportional to 20,604.38, 28,413.18 and 16,815.33

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Solution

The fourth proportional to 20,604.38, 28,413.18 and 16,815.33 is: 23,188.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.38 : 28,413.18 = 16,815.33 : x
  2. Step 2: Convert to fraction form
    20,604.38/28,413.18 = 16,815.33/x
  3. Step 3: Cross multiply
    20,604.38x = 28,413.18 × 16,815.33
  4. Step 4: Simplify right side
    20,604.38x = 477,776,998.05
  5. Step 5: Solve for x
    x = 477,776,998.05/20,604.38
  6. Step 6: Final answer
    x = 23,188.13

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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.