Home / 13,819.08-20,724.82-3,821.45

Finding the Fourth Proportional to 13,819.08, 20,724.82 and 3,821.45

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Solution

The fourth proportional to 13,819.08, 20,724.82 and 3,821.45 is: 5,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.08 : 20,724.82 = 3,821.45 : x
  2. Step 2: Convert to fraction form
    13,819.08/20,724.82 = 3,821.45/x
  3. Step 3: Cross multiply
    13,819.08x = 20,724.82 × 3,821.45
  4. Step 4: Simplify right side
    13,819.08x = 79,198,863.39
  5. Step 5: Solve for x
    x = 79,198,863.39/13,819.08
  6. Step 6: Final answer
    x = 5,731.12

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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.