Home / 13,676.33-20,512.67-3,814.78

Finding the Fourth Proportional to 13,676.33, 20,512.67 and 3,814.78

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Solution

The fourth proportional to 13,676.33, 20,512.67 and 3,814.78 is: 5,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.33 : 20,512.67 = 3,814.78 : x
  2. Step 2: Convert to fraction form
    13,676.33/20,512.67 = 3,814.78/x
  3. Step 3: Cross multiply
    13,676.33x = 20,512.67 × 3,814.78
  4. Step 4: Simplify right side
    13,676.33x = 78,251,252.91
  5. Step 5: Solve for x
    x = 78,251,252.91/13,676.33
  6. Step 6: Final answer
    x = 5,721.66

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1.5x scale

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.