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Finding the Fourth Proportional to 12,757.44, 19,086.90 and 12,724.62

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Solution

The fourth proportional to 12,757.44, 19,086.90 and 12,724.62 is: 19,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.44 : 19,086.90 = 12,724.62 : x
  2. Step 2: Convert to fraction form
    12,757.44/19,086.90 = 12,724.62/x
  3. Step 3: Cross multiply
    12,757.44x = 19,086.90 × 12,724.62
  4. Step 4: Simplify right side
    12,757.44x = 242,873,549.48
  5. Step 5: Solve for x
    x = 242,873,549.48/12,757.44
  6. Step 6: Final answer
    x = 19,037.80

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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.