Home / 12,940.70-19,410.66-3,581.28

Finding the Fourth Proportional to 12,940.70, 19,410.66 and 3,581.28

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Solution

The fourth proportional to 12,940.70, 19,410.66 and 3,581.28 is: 5,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.70 : 19,410.66 = 3,581.28 : x
  2. Step 2: Convert to fraction form
    12,940.70/19,410.66 = 3,581.28/x
  3. Step 3: Cross multiply
    12,940.70x = 19,410.66 × 3,581.28
  4. Step 4: Simplify right side
    12,940.70x = 69,515,008.44
  5. Step 5: Solve for x
    x = 69,515,008.44/12,940.70
  6. Step 6: Final answer
    x = 5,371.81

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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.