Home / 12,185.38-18,278.73-3,864.79

Finding the Fourth Proportional to 12,185.38, 18,278.73 and 3,864.79

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Solution

The fourth proportional to 12,185.38, 18,278.73 and 3,864.79 is: 5,797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.38 : 18,278.73 = 3,864.79 : x
  2. Step 2: Convert to fraction form
    12,185.38/18,278.73 = 3,864.79/x
  3. Step 3: Cross multiply
    12,185.38x = 18,278.73 × 3,864.79
  4. Step 4: Simplify right side
    12,185.38x = 70,643,452.92
  5. Step 5: Solve for x
    x = 70,643,452.92/12,185.38
  6. Step 6: Final answer
    x = 5,797.39

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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.