Home / 20,847.05-28,768.37-11,894.39

Finding the Fourth Proportional to 20,847.05, 28,768.37 and 11,894.39

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Solution

The fourth proportional to 20,847.05, 28,768.37 and 11,894.39 is: 16,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.05 : 28,768.37 = 11,894.39 : x
  2. Step 2: Convert to fraction form
    20,847.05/28,768.37 = 11,894.39/x
  3. Step 3: Cross multiply
    20,847.05x = 28,768.37 × 11,894.39
  4. Step 4: Simplify right side
    20,847.05x = 342,182,009.13
  5. Step 5: Solve for x
    x = 342,182,009.13/20,847.05
  6. Step 6: Final answer
    x = 16,413.93

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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.