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Finding the Fourth Proportional to 11,892.70, 16,361.62 and 11,564.65

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Solution

The fourth proportional to 11,892.70, 16,361.62 and 11,564.65 is: 15,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892.70 : 16,361.62 = 11,564.65 : x
  2. Step 2: Convert to fraction form
    11,892.70/16,361.62 = 11,564.65/x
  3. Step 3: Cross multiply
    11,892.70x = 16,361.62 × 11,564.65
  4. Step 4: Simplify right side
    11,892.70x = 189,216,408.73
  5. Step 5: Solve for x
    x = 189,216,408.73/11,892.70
  6. Step 6: Final answer
    x = 15,910.30

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1.5x scale

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.