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Finding the Fourth Proportional to 14,863.88, 20,511.61 and 8,149.36

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Solution

The fourth proportional to 14,863.88, 20,511.61 and 8,149.36 is: 11,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,863.88 : 20,511.61 = 8,149.36 : x
  2. Step 2: Convert to fraction form
    14,863.88/20,511.61 = 8,149.36/x
  3. Step 3: Cross multiply
    14,863.88x = 20,511.61 × 8,149.36
  4. Step 4: Simplify right side
    14,863.88x = 167,156,494.07
  5. Step 5: Solve for x
    x = 167,156,494.07/14,863.88
  6. Step 6: Final answer
    x = 11,245.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.