Home / 11,690.91-17,537.28-3,899.72

Finding the Fourth Proportional to 11,690.91, 17,537.28 and 3,899.72

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Solution

The fourth proportional to 11,690.91, 17,537.28 and 3,899.72 is: 5,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.91 : 17,537.28 = 3,899.72 : x
  2. Step 2: Convert to fraction form
    11,690.91/17,537.28 = 3,899.72/x
  3. Step 3: Cross multiply
    11,690.91x = 17,537.28 × 3,899.72
  4. Step 4: Simplify right side
    11,690.91x = 68,390,393.88
  5. Step 5: Solve for x
    x = 68,390,393.88/11,690.91
  6. Step 6: Final answer
    x = 5,849.88

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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.