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Finding the Fourth Proportional to 21,671.97, 32,511.99 and 6,876.90

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Solution

The fourth proportional to 21,671.97, 32,511.99 and 6,876.90 is: 10,316.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.97 : 32,511.99 = 6,876.90 : x
  2. Step 2: Convert to fraction form
    21,671.97/32,511.99 = 6,876.90/x
  3. Step 3: Cross multiply
    21,671.97x = 32,511.99 × 6,876.90
  4. Step 4: Simplify right side
    21,671.97x = 223,581,704.03
  5. Step 5: Solve for x
    x = 223,581,704.03/21,671.97
  6. Step 6: Final answer
    x = 10,316.63

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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.