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Finding the Fourth Proportional to 35,891.60, 53,839.80 and 12,198.80

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Solution

The fourth proportional to 35,891.60, 53,839.80 and 12,198.80 is: 18,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,891.60 : 53,839.80 = 12,198.80 : x
  2. Step 2: Convert to fraction form
    35,891.60/53,839.80 = 12,198.80/x
  3. Step 3: Cross multiply
    35,891.60x = 53,839.80 × 12,198.80
  4. Step 4: Simplify right side
    35,891.60x = 656,780,952.24
  5. Step 5: Solve for x
    x = 656,780,952.24/35,891.60
  6. Step 6: Final answer
    x = 18,299.02

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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.