Home / 21,039.75-29,034.22-11,479.83

Finding the Fourth Proportional to 21,039.75, 29,034.22 and 11,479.83

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Solution

The fourth proportional to 21,039.75, 29,034.22 and 11,479.83 is: 15,841.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.75 : 29,034.22 = 11,479.83 : x
  2. Step 2: Convert to fraction form
    21,039.75/29,034.22 = 11,479.83/x
  3. Step 3: Cross multiply
    21,039.75x = 29,034.22 × 11,479.83
  4. Step 4: Simplify right side
    21,039.75x = 333,307,909.78
  5. Step 5: Solve for x
    x = 333,307,909.78/21,039.75
  6. Step 6: Final answer
    x = 15,841.82

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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.