Home / 12,170.82-18,290.31-7,241.22

Finding the Fourth Proportional to 12,170.82, 18,290.31 and 7,241.22

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Solution

The fourth proportional to 12,170.82, 18,290.31 and 7,241.22 is: 10,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.82 : 18,290.31 = 7,241.22 : x
  2. Step 2: Convert to fraction form
    12,170.82/18,290.31 = 7,241.22/x
  3. Step 3: Cross multiply
    12,170.82x = 18,290.31 × 7,241.22
  4. Step 4: Simplify right side
    12,170.82x = 132,444,158.58
  5. Step 5: Solve for x
    x = 132,444,158.58/12,170.82
  6. Step 6: Final answer
    x = 10,882.11

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1.5x scale

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.