Home / 18,025.80-27,040.38-4,878.28

Finding the Fourth Proportional to 18,025.80, 27,040.38 and 4,878.28

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Solution

The fourth proportional to 18,025.80, 27,040.38 and 4,878.28 is: 7,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,025.80 : 27,040.38 = 4,878.28 : x
  2. Step 2: Convert to fraction form
    18,025.80/27,040.38 = 4,878.28/x
  3. Step 3: Cross multiply
    18,025.80x = 27,040.38 × 4,878.28
  4. Step 4: Simplify right side
    18,025.80x = 131,910,544.95
  5. Step 5: Solve for x
    x = 131,910,544.95/18,025.80
  6. Step 6: Final answer
    x = 7,317.87

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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.