Home / 18,119.75-27,179.78-5,639.27

Finding the Fourth Proportional to 18,119.75, 27,179.78 and 5,639.27

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Solution

The fourth proportional to 18,119.75, 27,179.78 and 5,639.27 is: 8,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.75 : 27,179.78 = 5,639.27 : x
  2. Step 2: Convert to fraction form
    18,119.75/27,179.78 = 5,639.27/x
  3. Step 3: Cross multiply
    18,119.75x = 27,179.78 × 5,639.27
  4. Step 4: Simplify right side
    18,119.75x = 153,274,122.61
  5. Step 5: Solve for x
    x = 153,274,122.61/18,119.75
  6. Step 6: Final answer
    x = 8,458.95

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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.