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Finding the Fourth Proportional to 12,163.69, 18,245.53 and 2,929.69

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Solution

The fourth proportional to 12,163.69, 18,245.53 and 2,929.69 is: 4,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.69 : 18,245.53 = 2,929.69 : x
  2. Step 2: Convert to fraction form
    12,163.69/18,245.53 = 2,929.69/x
  3. Step 3: Cross multiply
    12,163.69x = 18,245.53 × 2,929.69
  4. Step 4: Simplify right side
    12,163.69x = 53,453,704.83
  5. Step 5: Solve for x
    x = 53,453,704.83/12,163.69
  6. Step 6: Final answer
    x = 4,394.53

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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.