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Finding the Fourth Proportional to 36,687.60, 50,628.78 and 19,920.60

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Solution

The fourth proportional to 36,687.60, 50,628.78 and 19,920.60 is: 27,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.60 : 50,628.78 = 19,920.60 : x
  2. Step 2: Convert to fraction form
    36,687.60/50,628.78 = 19,920.60/x
  3. Step 3: Cross multiply
    36,687.60x = 50,628.78 × 19,920.60
  4. Step 4: Simplify right side
    36,687.60x = 1,008,555,674.87
  5. Step 5: Solve for x
    x = 1,008,555,674.87/36,687.60
  6. Step 6: Final answer
    x = 27,490.37

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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.