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Finding the Fourth Proportional to 36,434, 50,270.28 and 20,515.28

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Solution

The fourth proportional to 36,434, 50,270.28 and 20,515.28 is: 28,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,434 : 50,270.28 = 20,515.28 : x
  2. Step 2: Convert to fraction form
    36,434/50,270.28 = 20,515.28/x
  3. Step 3: Cross multiply
    36,434x = 50,270.28 × 20,515.28
  4. Step 4: Simplify right side
    36,434x = 1,031,308,869.88
  5. Step 5: Solve for x
    x = 1,031,308,869.88/36,434
  6. Step 6: Final answer
    x = 28,306.22

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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.