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Finding the Fourth Proportional to 20,093.70, 30,136.42 and 7,609.41

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Solution

The fourth proportional to 20,093.70, 30,136.42 and 7,609.41 is: 11,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,093.70 : 30,136.42 = 7,609.41 : x
  2. Step 2: Convert to fraction form
    20,093.70/30,136.42 = 7,609.41/x
  3. Step 3: Cross multiply
    20,093.70x = 30,136.42 × 7,609.41
  4. Step 4: Simplify right side
    20,093.70x = 229,320,375.71
  5. Step 5: Solve for x
    x = 229,320,375.71/20,093.70
  6. Step 6: Final answer
    x = 11,412.55

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1.5x scale

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.