Home / 21,344.86-29,453.19-11,913.82

Finding the Fourth Proportional to 21,344.86, 29,453.19 and 11,913.82

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Solution

The fourth proportional to 21,344.86, 29,453.19 and 11,913.82 is: 16,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.86 : 29,453.19 = 11,913.82 : x
  2. Step 2: Convert to fraction form
    21,344.86/29,453.19 = 11,913.82/x
  3. Step 3: Cross multiply
    21,344.86x = 29,453.19 × 11,913.82
  4. Step 4: Simplify right side
    21,344.86x = 350,900,004.09
  5. Step 5: Solve for x
    x = 350,900,004.09/21,344.86
  6. Step 6: Final answer
    x = 16,439.56

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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.