Home / 12,239.06-18,361.28-3,919.75

Finding the Fourth Proportional to 12,239.06, 18,361.28 and 3,919.75

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Solution

The fourth proportional to 12,239.06, 18,361.28 and 3,919.75 is: 5,880.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.06 : 18,361.28 = 3,919.75 : x
  2. Step 2: Convert to fraction form
    12,239.06/18,361.28 = 3,919.75/x
  3. Step 3: Cross multiply
    12,239.06x = 18,361.28 × 3,919.75
  4. Step 4: Simplify right side
    12,239.06x = 71,971,591.18
  5. Step 5: Solve for x
    x = 71,971,591.18/12,239.06
  6. Step 6: Final answer
    x = 5,880.49

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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.