Home / 13,982.82-20,968.75-5,212.95

Finding the Fourth Proportional to 13,982.82, 20,968.75 and 5,212.95

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Solution

The fourth proportional to 13,982.82, 20,968.75 and 5,212.95 is: 7,817.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.82 : 20,968.75 = 5,212.95 : x
  2. Step 2: Convert to fraction form
    13,982.82/20,968.75 = 5,212.95/x
  3. Step 3: Cross multiply
    13,982.82x = 20,968.75 × 5,212.95
  4. Step 4: Simplify right side
    13,982.82x = 109,309,045.31
  5. Step 5: Solve for x
    x = 109,309,045.31/13,982.82
  6. Step 6: Final answer
    x = 7,817.38

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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.