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Finding the Fourth Proportional to 11,672.80, 16,129.44 and 8,873.44

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Solution

The fourth proportional to 11,672.80, 16,129.44 and 8,873.44 is: 12,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.80 : 16,129.44 = 8,873.44 : x
  2. Step 2: Convert to fraction form
    11,672.80/16,129.44 = 8,873.44/x
  3. Step 3: Cross multiply
    11,672.80x = 16,129.44 × 8,873.44
  4. Step 4: Simplify right side
    11,672.80x = 143,123,618.07
  5. Step 5: Solve for x
    x = 143,123,618.07/11,672.80
  6. Step 6: Final answer
    x = 12,261.29

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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.