Home / 17,731.19-26,629.52-11,891.90

Finding the Fourth Proportional to 17,731.19, 26,629.52 and 11,891.90

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Solution

The fourth proportional to 17,731.19, 26,629.52 and 11,891.90 is: 17,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,731.19 : 26,629.52 = 11,891.90 : x
  2. Step 2: Convert to fraction form
    17,731.19/26,629.52 = 11,891.90/x
  3. Step 3: Cross multiply
    17,731.19x = 26,629.52 × 11,891.90
  4. Step 4: Simplify right side
    17,731.19x = 316,675,396.28
  5. Step 5: Solve for x
    x = 316,675,396.28/17,731.19
  6. Step 6: Final answer
    x = 17,859.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.