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Finding the Fourth Proportional to 18,882.44, 28,327.04 and 7,782.96

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Solution

The fourth proportional to 18,882.44, 28,327.04 and 7,782.96 is: 11,675.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.44 : 28,327.04 = 7,782.96 : x
  2. Step 2: Convert to fraction form
    18,882.44/28,327.04 = 7,782.96/x
  3. Step 3: Cross multiply
    18,882.44x = 28,327.04 × 7,782.96
  4. Step 4: Simplify right side
    18,882.44x = 220,468,219.24
  5. Step 5: Solve for x
    x = 220,468,219.24/18,882.44
  6. Step 6: Final answer
    x = 11,675.83

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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.