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Finding the Fourth Proportional to 16,272.78, 22,456.44 and 8,820.78

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Solution

The fourth proportional to 16,272.78, 22,456.44 and 8,820.78 is: 12,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,272.78 : 22,456.44 = 8,820.78 : x
  2. Step 2: Convert to fraction form
    16,272.78/22,456.44 = 8,820.78/x
  3. Step 3: Cross multiply
    16,272.78x = 22,456.44 × 8,820.78
  4. Step 4: Simplify right side
    16,272.78x = 198,083,316.82
  5. Step 5: Solve for x
    x = 198,083,316.82/16,272.78
  6. Step 6: Final answer
    x = 12,172.68

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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.