Home / 12,109.05-18,163.46-7,175.14

Finding the Fourth Proportional to 12,109.05, 18,163.46 and 7,175.14

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Solution

The fourth proportional to 12,109.05, 18,163.46 and 7,175.14 is: 10,762.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.05 : 18,163.46 = 7,175.14 : x
  2. Step 2: Convert to fraction form
    12,109.05/18,163.46 = 7,175.14/x
  3. Step 3: Cross multiply
    12,109.05x = 18,163.46 × 7,175.14
  4. Step 4: Simplify right side
    12,109.05x = 130,325,241.69
  5. Step 5: Solve for x
    x = 130,325,241.69/12,109.05
  6. Step 6: Final answer
    x = 10,762.63

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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.