Home / 13,290.62-19,936.19-3,930.63

Finding the Fourth Proportional to 13,290.62, 19,936.19 and 3,930.63

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Solution

The fourth proportional to 13,290.62, 19,936.19 and 3,930.63 is: 5,896.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.62 : 19,936.19 = 3,930.63 : x
  2. Step 2: Convert to fraction form
    13,290.62/19,936.19 = 3,930.63/x
  3. Step 3: Cross multiply
    13,290.62x = 19,936.19 × 3,930.63
  4. Step 4: Simplify right side
    13,290.62x = 78,361,786.50
  5. Step 5: Solve for x
    x = 78,361,786.50/13,290.62
  6. Step 6: Final answer
    x = 5,896.02

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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.