Home / 18,021.75-27,010.67-12,758.25

Finding the Fourth Proportional to 18,021.75, 27,010.67 and 12,758.25

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Solution

The fourth proportional to 18,021.75, 27,010.67 and 12,758.25 is: 19,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,021.75 : 27,010.67 = 12,758.25 : x
  2. Step 2: Convert to fraction form
    18,021.75/27,010.67 = 12,758.25/x
  3. Step 3: Cross multiply
    18,021.75x = 27,010.67 × 12,758.25
  4. Step 4: Simplify right side
    18,021.75x = 344,608,816.74
  5. Step 5: Solve for x
    x = 344,608,816.74/18,021.75
  6. Step 6: Final answer
    x = 19,121.83

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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.