Home / 10,821.12-16,198.77-9,662.01

Finding the Fourth Proportional to 10,821.12, 16,198.77 and 9,662.01

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Solution

The fourth proportional to 10,821.12, 16,198.77 and 9,662.01 is: 14,463.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.12 : 16,198.77 = 9,662.01 : x
  2. Step 2: Convert to fraction form
    10,821.12/16,198.77 = 9,662.01/x
  3. Step 3: Cross multiply
    10,821.12x = 16,198.77 × 9,662.01
  4. Step 4: Simplify right side
    10,821.12x = 156,512,677.73
  5. Step 5: Solve for x
    x = 156,512,677.73/10,821.12
  6. Step 6: Final answer
    x = 14,463.63

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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.