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Finding the Fourth Proportional to 36,687.12, 50,628.43 and 19,920.12

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Solution

The fourth proportional to 36,687.12, 50,628.43 and 19,920.12 is: 27,489.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.12 : 50,628.43 = 19,920.12 : x
  2. Step 2: Convert to fraction form
    36,687.12/50,628.43 = 19,920.12/x
  3. Step 3: Cross multiply
    36,687.12x = 50,628.43 × 19,920.12
  4. Step 4: Simplify right side
    36,687.12x = 1,008,524,301.41
  5. Step 5: Solve for x
    x = 1,008,524,301.41/36,687.12
  6. Step 6: Final answer
    x = 27,489.87

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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.