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Finding the Fourth Proportional to 20,662.26, 30,992.82 and 7,514.88

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Solution

The fourth proportional to 20,662.26, 30,992.82 and 7,514.88 is: 11,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.26 : 30,992.82 = 7,514.88 : x
  2. Step 2: Convert to fraction form
    20,662.26/30,992.82 = 7,514.88/x
  3. Step 3: Cross multiply
    20,662.26x = 30,992.82 × 7,514.88
  4. Step 4: Simplify right side
    20,662.26x = 232,907,323.16
  5. Step 5: Solve for x
    x = 232,907,323.16/20,662.26
  6. Step 6: Final answer
    x = 11,272.11

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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.