Home / 21,049.26-29,049.75-11,619.78

Finding the Fourth Proportional to 21,049.26, 29,049.75 and 11,619.78

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Solution

The fourth proportional to 21,049.26, 29,049.75 and 11,619.78 is: 16,036.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.26 : 29,049.75 = 11,619.78 : x
  2. Step 2: Convert to fraction form
    21,049.26/29,049.75 = 11,619.78/x
  3. Step 3: Cross multiply
    21,049.26x = 29,049.75 × 11,619.78
  4. Step 4: Simplify right side
    21,049.26x = 337,551,704.06
  5. Step 5: Solve for x
    x = 337,551,704.06/21,049.26
  6. Step 6: Final answer
    x = 16,036.27

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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.