Home / 12,310.43-18,466.92-3,990.11

Finding the Fourth Proportional to 12,310.43, 18,466.92 and 3,990.11

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Solution

The fourth proportional to 12,310.43, 18,466.92 and 3,990.11 is: 5,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.43 : 18,466.92 = 3,990.11 : x
  2. Step 2: Convert to fraction form
    12,310.43/18,466.92 = 3,990.11/x
  3. Step 3: Cross multiply
    12,310.43x = 18,466.92 × 3,990.11
  4. Step 4: Simplify right side
    12,310.43x = 73,684,949.83
  5. Step 5: Solve for x
    x = 73,684,949.83/12,310.43
  6. Step 6: Final answer
    x = 5,985.57

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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.