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Finding the Fourth Proportional to 18,010.92, 26,991.98 and 8,137.88

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Solution

The fourth proportional to 18,010.92, 26,991.98 and 8,137.88 is: 12,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010.92 : 26,991.98 = 8,137.88 : x
  2. Step 2: Convert to fraction form
    18,010.92/26,991.98 = 8,137.88/x
  3. Step 3: Cross multiply
    18,010.92x = 26,991.98 × 8,137.88
  4. Step 4: Simplify right side
    18,010.92x = 219,657,494.20
  5. Step 5: Solve for x
    x = 219,657,494.20/18,010.92
  6. Step 6: Final answer
    x = 12,195.80

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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.