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Finding the Fourth Proportional to 33,810.20, 50,729.70 and 21,339.80

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Solution

The fourth proportional to 33,810.20, 50,729.70 and 21,339.80 is: 32,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,810.20 : 50,729.70 = 21,339.80 : x
  2. Step 2: Convert to fraction form
    33,810.20/50,729.70 = 21,339.80/x
  3. Step 3: Cross multiply
    33,810.20x = 50,729.70 × 21,339.80
  4. Step 4: Simplify right side
    33,810.20x = 1,082,561,652.06
  5. Step 5: Solve for x
    x = 1,082,561,652.06/33,810.20
  6. Step 6: Final answer
    x = 32,018.79

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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.