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Finding the Fourth Proportional to 11,189.57, 16,789.22 and 5,641.88

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Solution

The fourth proportional to 11,189.57, 16,789.22 and 5,641.88 is: 8,465.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.57 : 16,789.22 = 5,641.88 : x
  2. Step 2: Convert to fraction form
    11,189.57/16,789.22 = 5,641.88/x
  3. Step 3: Cross multiply
    11,189.57x = 16,789.22 × 5,641.88
  4. Step 4: Simplify right side
    11,189.57x = 94,722,652.38
  5. Step 5: Solve for x
    x = 94,722,652.38/11,189.57
  6. Step 6: Final answer
    x = 8,465.27

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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.