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Finding the Fourth Proportional to 35,393.64, 48,843.39 and 20,287.20

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Solution

The fourth proportional to 35,393.64, 48,843.39 and 20,287.20 is: 27,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,393.64 : 48,843.39 = 20,287.20 : x
  2. Step 2: Convert to fraction form
    35,393.64/48,843.39 = 20,287.20/x
  3. Step 3: Cross multiply
    35,393.64x = 48,843.39 × 20,287.20
  4. Step 4: Simplify right side
    35,393.64x = 990,895,621.61
  5. Step 5: Solve for x
    x = 990,895,621.61/35,393.64
  6. Step 6: Final answer
    x = 27,996.43

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1.5x scale

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.