Home / 20,136.06-30,178.50-11,375.88

Finding the Fourth Proportional to 20,136.06, 30,178.50 and 11,375.88

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Solution

The fourth proportional to 20,136.06, 30,178.50 and 11,375.88 is: 17,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.06 : 30,178.50 = 11,375.88 : x
  2. Step 2: Convert to fraction form
    20,136.06/30,178.50 = 11,375.88/x
  3. Step 3: Cross multiply
    20,136.06x = 30,178.50 × 11,375.88
  4. Step 4: Simplify right side
    20,136.06x = 343,306,994.58
  5. Step 5: Solve for x
    x = 343,306,994.58/20,136.06
  6. Step 6: Final answer
    x = 17,049.36

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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.