Home / 12,114.68-18,166.44-7,119.44

Finding the Fourth Proportional to 12,114.68, 18,166.44 and 7,119.44

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Solution

The fourth proportional to 12,114.68, 18,166.44 and 7,119.44 is: 10,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.68 : 18,166.44 = 7,119.44 : x
  2. Step 2: Convert to fraction form
    12,114.68/18,166.44 = 7,119.44/x
  3. Step 3: Cross multiply
    12,114.68x = 18,166.44 × 7,119.44
  4. Step 4: Simplify right side
    12,114.68x = 129,334,879.59
  5. Step 5: Solve for x
    x = 129,334,879.59/12,114.68
  6. Step 6: Final answer
    x = 10,675.88

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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.