Home / 13,299.39-19,949.05-3,940.14

Finding the Fourth Proportional to 13,299.39, 19,949.05 and 3,940.14

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Solution

The fourth proportional to 13,299.39, 19,949.05 and 3,940.14 is: 5,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.39 : 19,949.05 = 3,940.14 : x
  2. Step 2: Convert to fraction form
    13,299.39/19,949.05 = 3,940.14/x
  3. Step 3: Cross multiply
    13,299.39x = 19,949.05 × 3,940.14
  4. Step 4: Simplify right side
    13,299.39x = 78,602,049.87
  5. Step 5: Solve for x
    x = 78,602,049.87/13,299.39
  6. Step 6: Final answer
    x = 5,910.20

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Similar ratio
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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.