Home / 13,982.70-20,968.89-5,217.42

Finding the Fourth Proportional to 13,982.70, 20,968.89 and 5,217.42

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Solution

The fourth proportional to 13,982.70, 20,968.89 and 5,217.42 is: 7,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.70 : 20,968.89 = 5,217.42 : x
  2. Step 2: Convert to fraction form
    13,982.70/20,968.89 = 5,217.42/x
  3. Step 3: Cross multiply
    13,982.70x = 20,968.89 × 5,217.42
  4. Step 4: Simplify right side
    13,982.70x = 109,403,506.06
  5. Step 5: Solve for x
    x = 109,403,506.06/13,982.70
  6. Step 6: Final answer
    x = 7,824.20

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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.