Home / 18,265.75-27,399.08-5,119.15

Finding the Fourth Proportional to 18,265.75, 27,399.08 and 5,119.15

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Solution

The fourth proportional to 18,265.75, 27,399.08 and 5,119.15 is: 7,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.75 : 27,399.08 = 5,119.15 : x
  2. Step 2: Convert to fraction form
    18,265.75/27,399.08 = 5,119.15/x
  3. Step 3: Cross multiply
    18,265.75x = 27,399.08 × 5,119.15
  4. Step 4: Simplify right side
    18,265.75x = 140,259,863.39
  5. Step 5: Solve for x
    x = 140,259,863.39/18,265.75
  6. Step 6: Final answer
    x = 7,678.85

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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.