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Finding the Fourth Proportional to 13,673.10, 18,879.84 and 8,895.45

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Solution

The fourth proportional to 13,673.10, 18,879.84 and 8,895.45 is: 12,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.10 : 18,879.84 = 8,895.45 : x
  2. Step 2: Convert to fraction form
    13,673.10/18,879.84 = 8,895.45/x
  3. Step 3: Cross multiply
    13,673.10x = 18,879.84 × 8,895.45
  4. Step 4: Simplify right side
    13,673.10x = 167,944,672.73
  5. Step 5: Solve for x
    x = 167,944,672.73/13,673.10
  6. Step 6: Final answer
    x = 12,282.85

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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.