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Finding the Fourth Proportional to 11,876.64, 17,814.72 and 3,556.68

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Solution

The fourth proportional to 11,876.64, 17,814.72 and 3,556.68 is: 5,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.64 : 17,814.72 = 3,556.68 : x
  2. Step 2: Convert to fraction form
    11,876.64/17,814.72 = 3,556.68/x
  3. Step 3: Cross multiply
    11,876.64x = 17,814.72 × 3,556.68
  4. Step 4: Simplify right side
    11,876.64x = 63,361,258.33
  5. Step 5: Solve for x
    x = 63,361,258.33/11,876.64
  6. Step 6: Final answer
    x = 5,334.95

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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.