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Finding the Fourth Proportional to 12,168.39, 18,252.39 and 3,403.17

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Solution

The fourth proportional to 12,168.39, 18,252.39 and 3,403.17 is: 5,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.39 : 18,252.39 = 3,403.17 : x
  2. Step 2: Convert to fraction form
    12,168.39/18,252.39 = 3,403.17/x
  3. Step 3: Cross multiply
    12,168.39x = 18,252.39 × 3,403.17
  4. Step 4: Simplify right side
    12,168.39x = 62,115,986.08
  5. Step 5: Solve for x
    x = 62,115,986.08/12,168.39
  6. Step 6: Final answer
    x = 5,104.70

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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.