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Finding the Fourth Proportional to 33,990.10, 50,964.90 and 20,851.90

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Solution

The fourth proportional to 33,990.10, 50,964.90 and 20,851.90 is: 31,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,990.10 : 50,964.90 = 20,851.90 : x
  2. Step 2: Convert to fraction form
    33,990.10/50,964.90 = 20,851.90/x
  3. Step 3: Cross multiply
    33,990.10x = 50,964.90 × 20,851.90
  4. Step 4: Simplify right side
    33,990.10x = 1,062,714,998.31
  5. Step 5: Solve for x
    x = 1,062,714,998.31/33,990.10
  6. Step 6: Final answer
    x = 31,265.43

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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.