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Finding the Fourth Proportional to 21,514, 32,272.22 and 7,663

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Solution

The fourth proportional to 21,514, 32,272.22 and 7,663 is: 11,494.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514 : 32,272.22 = 7,663 : x
  2. Step 2: Convert to fraction form
    21,514/32,272.22 = 7,663/x
  3. Step 3: Cross multiply
    21,514x = 32,272.22 × 7,663
  4. Step 4: Simplify right side
    21,514x = 247,302,021.86
  5. Step 5: Solve for x
    x = 247,302,021.86/21,514
  6. Step 6: Final answer
    x = 11,494.93

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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.