Home / 12,986.31-19,481.91-4,223.73

Finding the Fourth Proportional to 12,986.31, 19,481.91 and 4,223.73

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Solution

The fourth proportional to 12,986.31, 19,481.91 and 4,223.73 is: 6,336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.31 : 19,481.91 = 4,223.73 : x
  2. Step 2: Convert to fraction form
    12,986.31/19,481.91 = 4,223.73/x
  3. Step 3: Cross multiply
    12,986.31x = 19,481.91 × 4,223.73
  4. Step 4: Simplify right side
    12,986.31x = 82,286,327.72
  5. Step 5: Solve for x
    x = 82,286,327.72/12,986.31
  6. Step 6: Final answer
    x = 6,336.39

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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.