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Finding the Fourth Proportional to 20,592.67, 30,905.41 and 8,115.84

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Solution

The fourth proportional to 20,592.67, 30,905.41 and 8,115.84 is: 12,180.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.67 : 30,905.41 = 8,115.84 : x
  2. Step 2: Convert to fraction form
    20,592.67/30,905.41 = 8,115.84/x
  3. Step 3: Cross multiply
    20,592.67x = 30,905.41 × 8,115.84
  4. Step 4: Simplify right side
    20,592.67x = 250,823,362.69
  5. Step 5: Solve for x
    x = 250,823,362.69/20,592.67
  6. Step 6: Final answer
    x = 12,180.23

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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.