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Finding the Fourth Proportional to 18,520.72, 27,800.82 and 7,995.88

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Solution

The fourth proportional to 18,520.72, 27,800.82 and 7,995.88 is: 12,002.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.72 : 27,800.82 = 7,995.88 : x
  2. Step 2: Convert to fraction form
    18,520.72/27,800.82 = 7,995.88/x
  3. Step 3: Cross multiply
    18,520.72x = 27,800.82 × 7,995.88
  4. Step 4: Simplify right side
    18,520.72x = 222,292,020.62
  5. Step 5: Solve for x
    x = 222,292,020.62/18,520.72
  6. Step 6: Final answer
    x = 12,002.34

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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.