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Finding the Fourth Proportional to 36,909.63, 50,935.29 and 20,142.63

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Solution

The fourth proportional to 36,909.63, 50,935.29 and 20,142.63 is: 27,796.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,909.63 : 50,935.29 = 20,142.63 : x
  2. Step 2: Convert to fraction form
    36,909.63/50,935.29 = 20,142.63/x
  3. Step 3: Cross multiply
    36,909.63x = 50,935.29 × 20,142.63
  4. Step 4: Simplify right side
    36,909.63x = 1,025,970,700.41
  5. Step 5: Solve for x
    x = 1,025,970,700.41/36,909.63
  6. Step 6: Final answer
    x = 27,796.83

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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.