Home / 11,786.78-17,680.80-3,021.77

Finding the Fourth Proportional to 11,786.78, 17,680.80 and 3,021.77

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Solution

The fourth proportional to 11,786.78, 17,680.80 and 3,021.77 is: 4,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,786.78 : 17,680.80 = 3,021.77 : x
  2. Step 2: Convert to fraction form
    11,786.78/17,680.80 = 3,021.77/x
  3. Step 3: Cross multiply
    11,786.78x = 17,680.80 × 3,021.77
  4. Step 4: Simplify right side
    11,786.78x = 53,427,311.02
  5. Step 5: Solve for x
    x = 53,427,311.02/11,786.78
  6. Step 6: Final answer
    x = 4,532.82

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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.