Home / 21,403.14-29,534.72-11,969.88

Finding the Fourth Proportional to 21,403.14, 29,534.72 and 11,969.88

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Solution

The fourth proportional to 21,403.14, 29,534.72 and 11,969.88 is: 16,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.14 : 29,534.72 = 11,969.88 : x
  2. Step 2: Convert to fraction form
    21,403.14/29,534.72 = 11,969.88/x
  3. Step 3: Cross multiply
    21,403.14x = 29,534.72 × 11,969.88
  4. Step 4: Simplify right side
    21,403.14x = 353,526,906.56
  5. Step 5: Solve for x
    x = 353,526,906.56/21,403.14
  6. Step 6: Final answer
    x = 16,517.53

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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.