Home / 21,964.20-30,310.50-11,892.56

Finding the Fourth Proportional to 21,964.20, 30,310.50 and 11,892.56

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Solution

The fourth proportional to 21,964.20, 30,310.50 and 11,892.56 is: 16,411.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.20 : 30,310.50 = 11,892.56 : x
  2. Step 2: Convert to fraction form
    21,964.20/30,310.50 = 11,892.56/x
  3. Step 3: Cross multiply
    21,964.20x = 30,310.50 × 11,892.56
  4. Step 4: Simplify right side
    21,964.20x = 360,469,332.92
  5. Step 5: Solve for x
    x = 360,469,332.92/21,964.20
  6. Step 6: Final answer
    x = 16,411.68

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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.