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Finding the Fourth Proportional to 11,755.22, 16,221 and 6,719.34

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Solution

The fourth proportional to 11,755.22, 16,221 and 6,719.34 is: 9,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.22 : 16,221 = 6,719.34 : x
  2. Step 2: Convert to fraction form
    11,755.22/16,221 = 6,719.34/x
  3. Step 3: Cross multiply
    11,755.22x = 16,221 × 6,719.34
  4. Step 4: Simplify right side
    11,755.22x = 108,994,414.14
  5. Step 5: Solve for x
    x = 108,994,414.14/11,755.22
  6. Step 6: Final answer
    x = 9,272.01

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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.