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Finding the Fourth Proportional to 18,882.94, 28,305.94 and 7,798.97

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Solution

The fourth proportional to 18,882.94, 28,305.94 and 7,798.97 is: 11,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.94 : 28,305.94 = 7,798.97 : x
  2. Step 2: Convert to fraction form
    18,882.94/28,305.94 = 7,798.97/x
  3. Step 3: Cross multiply
    18,882.94x = 28,305.94 × 7,798.97
  4. Step 4: Simplify right side
    18,882.94x = 220,757,086.62
  5. Step 5: Solve for x
    x = 220,757,086.62/18,882.94
  6. Step 6: Final answer
    x = 11,690.82

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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.