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Finding the Fourth Proportional to 12,325.30, 18,487.92 and 2,965.31

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Solution

The fourth proportional to 12,325.30, 18,487.92 and 2,965.31 is: 4,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.30 : 18,487.92 = 2,965.31 : x
  2. Step 2: Convert to fraction form
    12,325.30/18,487.92 = 2,965.31/x
  3. Step 3: Cross multiply
    12,325.30x = 18,487.92 × 2,965.31
  4. Step 4: Simplify right side
    12,325.30x = 54,822,321.62
  5. Step 5: Solve for x
    x = 54,822,321.62/12,325.30
  6. Step 6: Final answer
    x = 4,447.95

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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.