Home / 11,971.86-17,961.60-3,653.48

Finding the Fourth Proportional to 11,971.86, 17,961.60 and 3,653.48

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Solution

The fourth proportional to 11,971.86, 17,961.60 and 3,653.48 is: 5,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.86 : 17,961.60 = 3,653.48 : x
  2. Step 2: Convert to fraction form
    11,971.86/17,961.60 = 3,653.48/x
  3. Step 3: Cross multiply
    11,971.86x = 17,961.60 × 3,653.48
  4. Step 4: Simplify right side
    11,971.86x = 65,622,346.37
  5. Step 5: Solve for x
    x = 65,622,346.37/11,971.86
  6. Step 6: Final answer
    x = 5,481.38

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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.