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Finding the Fourth Proportional to 11,234.22, 16,865.91 and 8,638.98

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Solution

The fourth proportional to 11,234.22, 16,865.91 and 8,638.98 is: 12,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,234.22 : 16,865.91 = 8,638.98 : x
  2. Step 2: Convert to fraction form
    11,234.22/16,865.91 = 8,638.98/x
  3. Step 3: Cross multiply
    11,234.22x = 16,865.91 × 8,638.98
  4. Step 4: Simplify right side
    11,234.22x = 145,704,259.17
  5. Step 5: Solve for x
    x = 145,704,259.17/11,234.22
  6. Step 6: Final answer
    x = 12,969.68

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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.