Home / 12,824.96-19,239.78-3,940.10

Finding the Fourth Proportional to 12,824.96, 19,239.78 and 3,940.10

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Solution

The fourth proportional to 12,824.96, 19,239.78 and 3,940.10 is: 5,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.96 : 19,239.78 = 3,940.10 : x
  2. Step 2: Convert to fraction form
    12,824.96/19,239.78 = 3,940.10/x
  3. Step 3: Cross multiply
    12,824.96x = 19,239.78 × 3,940.10
  4. Step 4: Simplify right side
    12,824.96x = 75,806,657.18
  5. Step 5: Solve for x
    x = 75,806,657.18/12,824.96
  6. Step 6: Final answer
    x = 5,910.87

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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.