Home / 18,645.49-27,982.20-11,635.75

Finding the Fourth Proportional to 18,645.49, 27,982.20 and 11,635.75

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Solution

The fourth proportional to 18,645.49, 27,982.20 and 11,635.75 is: 17,462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.49 : 27,982.20 = 11,635.75 : x
  2. Step 2: Convert to fraction form
    18,645.49/27,982.20 = 11,635.75/x
  3. Step 3: Cross multiply
    18,645.49x = 27,982.20 × 11,635.75
  4. Step 4: Simplify right side
    18,645.49x = 325,593,883.65
  5. Step 5: Solve for x
    x = 325,593,883.65/18,645.49
  6. Step 6: Final answer
    x = 17,462.34

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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.