Home / 12,079.88-18,119.24-3,759.70

Finding the Fourth Proportional to 12,079.88, 18,119.24 and 3,759.70

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Solution

The fourth proportional to 12,079.88, 18,119.24 and 3,759.70 is: 5,639.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.88 : 18,119.24 = 3,759.70 : x
  2. Step 2: Convert to fraction form
    12,079.88/18,119.24 = 3,759.70/x
  3. Step 3: Cross multiply
    12,079.88x = 18,119.24 × 3,759.70
  4. Step 4: Simplify right side
    12,079.88x = 68,122,816.03
  5. Step 5: Solve for x
    x = 68,122,816.03/12,079.88
  6. Step 6: Final answer
    x = 5,639.36

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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.