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Finding the Fourth Proportional to 18,882.42, 28,299.39 and 7,796.88

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Solution

The fourth proportional to 18,882.42, 28,299.39 and 7,796.88 is: 11,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.42 : 28,299.39 = 7,796.88 : x
  2. Step 2: Convert to fraction form
    18,882.42/28,299.39 = 7,796.88/x
  3. Step 3: Cross multiply
    18,882.42x = 28,299.39 × 7,796.88
  4. Step 4: Simplify right side
    18,882.42x = 220,646,947.90
  5. Step 5: Solve for x
    x = 220,646,947.90/18,882.42
  6. Step 6: Final answer
    x = 11,685.31

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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.