Home / 12,747.45-19,121.19-3,982.41

Finding the Fourth Proportional to 12,747.45, 19,121.19 and 3,982.41

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Solution

The fourth proportional to 12,747.45, 19,121.19 and 3,982.41 is: 5,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.45 : 19,121.19 = 3,982.41 : x
  2. Step 2: Convert to fraction form
    12,747.45/19,121.19 = 3,982.41/x
  3. Step 3: Cross multiply
    12,747.45x = 19,121.19 × 3,982.41
  4. Step 4: Simplify right side
    12,747.45x = 76,148,418.27
  5. Step 5: Solve for x
    x = 76,148,418.27/12,747.45
  6. Step 6: Final answer
    x = 5,973.62

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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.