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Finding the Fourth Proportional to 11,764, 16,233.78 and 6,458.90

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Solution

The fourth proportional to 11,764, 16,233.78 and 6,458.90 is: 8,912.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,764 : 16,233.78 = 6,458.90 : x
  2. Step 2: Convert to fraction form
    11,764/16,233.78 = 6,458.90/x
  3. Step 3: Cross multiply
    11,764x = 16,233.78 × 6,458.90
  4. Step 4: Simplify right side
    11,764x = 104,852,361.64
  5. Step 5: Solve for x
    x = 104,852,361.64/11,764
  6. Step 6: Final answer
    x = 8,912.99

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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.