Home / 21,619.62-29,833.29-12,190.50

Finding the Fourth Proportional to 21,619.62, 29,833.29 and 12,190.50

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Solution

The fourth proportional to 21,619.62, 29,833.29 and 12,190.50 is: 16,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.62 : 29,833.29 = 12,190.50 : x
  2. Step 2: Convert to fraction form
    21,619.62/29,833.29 = 12,190.50/x
  3. Step 3: Cross multiply
    21,619.62x = 29,833.29 × 12,190.50
  4. Step 4: Simplify right side
    21,619.62x = 363,682,721.75
  5. Step 5: Solve for x
    x = 363,682,721.75/21,619.62
  6. Step 6: Final answer
    x = 16,821.88

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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.