Home / 21,216.96-31,839.96-10,836

Finding the Fourth Proportional to 21,216.96, 31,839.96 and 10,836

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Solution

The fourth proportional to 21,216.96, 31,839.96 and 10,836 is: 16,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.96 : 31,839.96 = 10,836 : x
  2. Step 2: Convert to fraction form
    21,216.96/31,839.96 = 10,836/x
  3. Step 3: Cross multiply
    21,216.96x = 31,839.96 × 10,836
  4. Step 4: Simplify right side
    21,216.96x = 345,017,806.56
  5. Step 5: Solve for x
    x = 345,017,806.56/21,216.96
  6. Step 6: Final answer
    x = 16,261.42

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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.