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Finding the Fourth Proportional to 11,086.80, 16,630.20 and 5,254.80

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Solution

The fourth proportional to 11,086.80, 16,630.20 and 5,254.80 is: 7,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,086.80 : 16,630.20 = 5,254.80 : x
  2. Step 2: Convert to fraction form
    11,086.80/16,630.20 = 5,254.80/x
  3. Step 3: Cross multiply
    11,086.80x = 16,630.20 × 5,254.80
  4. Step 4: Simplify right side
    11,086.80x = 87,388,374.96
  5. Step 5: Solve for x
    x = 87,388,374.96/11,086.80
  6. Step 6: Final answer
    x = 7,882.20

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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.