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Finding the Fourth Proportional to 12,269.61, 18,404.34 and 7,340.63

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Solution

The fourth proportional to 12,269.61, 18,404.34 and 7,340.63 is: 11,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.61 : 18,404.34 = 7,340.63 : x
  2. Step 2: Convert to fraction form
    12,269.61/18,404.34 = 7,340.63/x
  3. Step 3: Cross multiply
    12,269.61x = 18,404.34 × 7,340.63
  4. Step 4: Simplify right side
    12,269.61x = 135,099,450.33
  5. Step 5: Solve for x
    x = 135,099,450.33/12,269.61
  6. Step 6: Final answer
    x = 11,010.90

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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.