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Finding the Fourth Proportional to 12,063.10, 18,110.85 and 7,699.90

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Solution

The fourth proportional to 12,063.10, 18,110.85 and 7,699.90 is: 11,560.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,063.10 : 18,110.85 = 7,699.90 : x
  2. Step 2: Convert to fraction form
    12,063.10/18,110.85 = 7,699.90/x
  3. Step 3: Cross multiply
    12,063.10x = 18,110.85 × 7,699.90
  4. Step 4: Simplify right side
    12,063.10x = 139,451,733.92
  5. Step 5: Solve for x
    x = 139,451,733.92/12,063.10
  6. Step 6: Final answer
    x = 11,560.19

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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.