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Finding the Fourth Proportional to 11,672.40, 16,107.72 and 6,367.22

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Solution

The fourth proportional to 11,672.40, 16,107.72 and 6,367.22 is: 8,786.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.40 : 16,107.72 = 6,367.22 : x
  2. Step 2: Convert to fraction form
    11,672.40/16,107.72 = 6,367.22/x
  3. Step 3: Cross multiply
    11,672.40x = 16,107.72 × 6,367.22
  4. Step 4: Simplify right side
    11,672.40x = 102,561,316.40
  5. Step 5: Solve for x
    x = 102,561,316.40/11,672.40
  6. Step 6: Final answer
    x = 8,786.65

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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.