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Finding the Fourth Proportional to 33,615.40, 50,423.10 and 21,173.80

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Solution

The fourth proportional to 33,615.40, 50,423.10 and 21,173.80 is: 31,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,615.40 : 50,423.10 = 21,173.80 : x
  2. Step 2: Convert to fraction form
    33,615.40/50,423.10 = 21,173.80/x
  3. Step 3: Cross multiply
    33,615.40x = 50,423.10 × 21,173.80
  4. Step 4: Simplify right side
    33,615.40x = 1,067,648,634.78
  5. Step 5: Solve for x
    x = 1,067,648,634.78/33,615.40
  6. Step 6: Final answer
    x = 31,760.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.