Home / 12,824.36-19,239.78-3,939.44

Finding the Fourth Proportional to 12,824.36, 19,239.78 and 3,939.44

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Solution

The fourth proportional to 12,824.36, 19,239.78 and 3,939.44 is: 5,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.36 : 19,239.78 = 3,939.44 : x
  2. Step 2: Convert to fraction form
    12,824.36/19,239.78 = 3,939.44/x
  3. Step 3: Cross multiply
    12,824.36x = 19,239.78 × 3,939.44
  4. Step 4: Simplify right side
    12,824.36x = 75,793,958.92
  5. Step 5: Solve for x
    x = 75,793,958.92/12,824.36
  6. Step 6: Final answer
    x = 5,910.16

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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.