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Finding the Fourth Proportional to 11,772, 16,239.65 and 7,796.45

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Solution

The fourth proportional to 11,772, 16,239.65 and 7,796.45 is: 10,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772 : 16,239.65 = 7,796.45 : x
  2. Step 2: Convert to fraction form
    11,772/16,239.65 = 7,796.45/x
  3. Step 3: Cross multiply
    11,772x = 16,239.65 × 7,796.45
  4. Step 4: Simplify right side
    11,772x = 126,611,620.86
  5. Step 5: Solve for x
    x = 126,611,620.86/11,772
  6. Step 6: Final answer
    x = 10,755.32

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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.