Home / 12,119.68-18,181.44-3,912.32

Finding the Fourth Proportional to 12,119.68, 18,181.44 and 3,912.32

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Solution

The fourth proportional to 12,119.68, 18,181.44 and 3,912.32 is: 5,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.68 : 18,181.44 = 3,912.32 : x
  2. Step 2: Convert to fraction form
    12,119.68/18,181.44 = 3,912.32/x
  3. Step 3: Cross multiply
    12,119.68x = 18,181.44 × 3,912.32
  4. Step 4: Simplify right side
    12,119.68x = 71,131,611.34
  5. Step 5: Solve for x
    x = 71,131,611.34/12,119.68
  6. Step 6: Final answer
    x = 5,869.10

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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.