Home / 11,144.53-15,378.96-6,665.68

Finding the Fourth Proportional to 11,144.53, 15,378.96 and 6,665.68

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Solution

The fourth proportional to 11,144.53, 15,378.96 and 6,665.68 is: 9,198.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.53 : 15,378.96 = 6,665.68 : x
  2. Step 2: Convert to fraction form
    11,144.53/15,378.96 = 6,665.68/x
  3. Step 3: Cross multiply
    11,144.53x = 15,378.96 × 6,665.68
  4. Step 4: Simplify right side
    11,144.53x = 102,511,226.09
  5. Step 5: Solve for x
    x = 102,511,226.09/11,144.53
  6. Step 6: Final answer
    x = 9,198.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.