Home / 18,691.20-25,794.72-11,982.72

Finding the Fourth Proportional to 18,691.20, 25,794.72 and 11,982.72

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Solution

The fourth proportional to 18,691.20, 25,794.72 and 11,982.72 is: 16,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.20 : 25,794.72 = 11,982.72 : x
  2. Step 2: Convert to fraction form
    18,691.20/25,794.72 = 11,982.72/x
  3. Step 3: Cross multiply
    18,691.20x = 25,794.72 × 11,982.72
  4. Step 4: Simplify right side
    18,691.20x = 309,090,907.24
  5. Step 5: Solve for x
    x = 309,090,907.24/18,691.20
  6. Step 6: Final answer
    x = 16,536.71

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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.