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Finding the Fourth Proportional to 12,219.66, 18,329.49 and 3,453.44

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Solution

The fourth proportional to 12,219.66, 18,329.49 and 3,453.44 is: 5,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.66 : 18,329.49 = 3,453.44 : x
  2. Step 2: Convert to fraction form
    12,219.66/18,329.49 = 3,453.44/x
  3. Step 3: Cross multiply
    12,219.66x = 18,329.49 × 3,453.44
  4. Step 4: Simplify right side
    12,219.66x = 63,299,702.30
  5. Step 5: Solve for x
    x = 63,299,702.30/12,219.66
  6. Step 6: Final answer
    x = 5,180.15

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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.