Home / 28,940.82-39,912.54-18,186.84

Finding the Fourth Proportional to 28,940.82, 39,912.54 and 18,186.84

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Solution

The fourth proportional to 28,940.82, 39,912.54 and 18,186.84 is: 25,081.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940.82 : 39,912.54 = 18,186.84 : x
  2. Step 2: Convert to fraction form
    28,940.82/39,912.54 = 18,186.84/x
  3. Step 3: Cross multiply
    28,940.82x = 39,912.54 × 18,186.84
  4. Step 4: Simplify right side
    28,940.82x = 725,882,978.97
  5. Step 5: Solve for x
    x = 725,882,978.97/28,940.82
  6. Step 6: Final answer
    x = 25,081.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.