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Finding the Fourth Proportional to 20,412.67, 30,625.84 and 7,933.11

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Solution

The fourth proportional to 20,412.67, 30,625.84 and 7,933.11 is: 11,902.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.67 : 30,625.84 = 7,933.11 : x
  2. Step 2: Convert to fraction form
    20,412.67/30,625.84 = 7,933.11/x
  3. Step 3: Cross multiply
    20,412.67x = 30,625.84 × 7,933.11
  4. Step 4: Simplify right side
    20,412.67x = 242,958,157.56
  5. Step 5: Solve for x
    x = 242,958,157.56/20,412.67
  6. Step 6: Final answer
    x = 11,902.32

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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.