Home / 13,181.20-19,768.68-3,818.74

Finding the Fourth Proportional to 13,181.20, 19,768.68 and 3,818.74

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Solution

The fourth proportional to 13,181.20, 19,768.68 and 3,818.74 is: 5,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.20 : 19,768.68 = 3,818.74 : x
  2. Step 2: Convert to fraction form
    13,181.20/19,768.68 = 3,818.74/x
  3. Step 3: Cross multiply
    13,181.20x = 19,768.68 × 3,818.74
  4. Step 4: Simplify right side
    13,181.20x = 75,491,449.06
  5. Step 5: Solve for x
    x = 75,491,449.06/13,181.20
  6. Step 6: Final answer
    x = 5,727.21

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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.