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Finding the Fourth Proportional to 36,892.79, 50,910.93 and 20,761

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Solution

The fourth proportional to 36,892.79, 50,910.93 and 20,761 is: 28,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,892.79 : 50,910.93 = 20,761 : x
  2. Step 2: Convert to fraction form
    36,892.79/50,910.93 = 20,761/x
  3. Step 3: Cross multiply
    36,892.79x = 50,910.93 × 20,761
  4. Step 4: Simplify right side
    36,892.79x = 1,056,961,817.73
  5. Step 5: Solve for x
    x = 1,056,961,817.73/36,892.79
  6. Step 6: Final answer
    x = 28,649.55

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1.5x scale

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.