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Finding the Fourth Proportional to 12,579.44, 18,872.19 and 8,888.94

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Solution

The fourth proportional to 12,579.44, 18,872.19 and 8,888.94 is: 13,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.44 : 18,872.19 = 8,888.94 : x
  2. Step 2: Convert to fraction form
    12,579.44/18,872.19 = 8,888.94/x
  3. Step 3: Cross multiply
    12,579.44x = 18,872.19 × 8,888.94
  4. Step 4: Simplify right side
    12,579.44x = 167,753,764.58
  5. Step 5: Solve for x
    x = 167,753,764.58/12,579.44
  6. Step 6: Final answer
    x = 13,335.56

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1.5x scale

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.