Home / 18,139.75-27,205.47-4,993.25

Finding the Fourth Proportional to 18,139.75, 27,205.47 and 4,993.25

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Solution

The fourth proportional to 18,139.75, 27,205.47 and 4,993.25 is: 7,488.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.75 : 27,205.47 = 4,993.25 : x
  2. Step 2: Convert to fraction form
    18,139.75/27,205.47 = 4,993.25/x
  3. Step 3: Cross multiply
    18,139.75x = 27,205.47 × 4,993.25
  4. Step 4: Simplify right side
    18,139.75x = 135,843,577.05
  5. Step 5: Solve for x
    x = 135,843,577.05/18,139.75
  6. Step 6: Final answer
    x = 7,488.72

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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.