Home / 13,982.49-20,959.11-5,213.88

Finding the Fourth Proportional to 13,982.49, 20,959.11 and 5,213.88

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Solution

The fourth proportional to 13,982.49, 20,959.11 and 5,213.88 is: 7,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.49 : 20,959.11 = 5,213.88 : x
  2. Step 2: Convert to fraction form
    13,982.49/20,959.11 = 5,213.88/x
  3. Step 3: Cross multiply
    13,982.49x = 20,959.11 × 5,213.88
  4. Step 4: Simplify right side
    13,982.49x = 109,278,284.45
  5. Step 5: Solve for x
    x = 109,278,284.45/13,982.49
  6. Step 6: Final answer
    x = 7,815.37

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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.