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Finding the Fourth Proportional to 36,728.68, 50,685.80 and 21,622

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Solution

The fourth proportional to 36,728.68, 50,685.80 and 21,622 is: 29,838.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,728.68 : 50,685.80 = 21,622 : x
  2. Step 2: Convert to fraction form
    36,728.68/50,685.80 = 21,622/x
  3. Step 3: Cross multiply
    36,728.68x = 50,685.80 × 21,622
  4. Step 4: Simplify right side
    36,728.68x = 1,095,928,367.60
  5. Step 5: Solve for x
    x = 1,095,928,367.60/36,728.68
  6. Step 6: Final answer
    x = 29,838.49

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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.