Home / 30,211.88-41,691.78-16,782.75

Finding the Fourth Proportional to 30,211.88, 41,691.78 and 16,782.75

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Solution

The fourth proportional to 30,211.88, 41,691.78 and 16,782.75 is: 23,159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.88 : 41,691.78 = 16,782.75 : x
  2. Step 2: Convert to fraction form
    30,211.88/41,691.78 = 16,782.75/x
  3. Step 3: Cross multiply
    30,211.88x = 41,691.78 × 16,782.75
  4. Step 4: Simplify right side
    30,211.88x = 699,702,720.80
  5. Step 5: Solve for x
    x = 699,702,720.80/30,211.88
  6. Step 6: Final answer
    x = 23,159.86

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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.