Home / 20,185.88-27,832.68-13,815.54

Finding the Fourth Proportional to 20,185.88, 27,832.68 and 13,815.54

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Solution

The fourth proportional to 20,185.88, 27,832.68 and 13,815.54 is: 19,049.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.88 : 27,832.68 = 13,815.54 : x
  2. Step 2: Convert to fraction form
    20,185.88/27,832.68 = 13,815.54/x
  3. Step 3: Cross multiply
    20,185.88x = 27,832.68 × 13,815.54
  4. Step 4: Simplify right side
    20,185.88x = 384,523,503.85
  5. Step 5: Solve for x
    x = 384,523,503.85/20,185.88
  6. Step 6: Final answer
    x = 19,049.14

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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.