Home / 11,856.78-16,362.45-6,821.33

Finding the Fourth Proportional to 11,856.78, 16,362.45 and 6,821.33

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Solution

The fourth proportional to 11,856.78, 16,362.45 and 6,821.33 is: 9,413.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.78 : 16,362.45 = 6,821.33 : x
  2. Step 2: Convert to fraction form
    11,856.78/16,362.45 = 6,821.33/x
  3. Step 3: Cross multiply
    11,856.78x = 16,362.45 × 6,821.33
  4. Step 4: Simplify right side
    11,856.78x = 111,613,589.25
  5. Step 5: Solve for x
    x = 111,613,589.25/11,856.78
  6. Step 6: Final answer
    x = 9,413.48

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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.