Home / 12,640.24-18,960.63-3,874.96

Finding the Fourth Proportional to 12,640.24, 18,960.63 and 3,874.96

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Solution

The fourth proportional to 12,640.24, 18,960.63 and 3,874.96 is: 5,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.24 : 18,960.63 = 3,874.96 : x
  2. Step 2: Convert to fraction form
    12,640.24/18,960.63 = 3,874.96/x
  3. Step 3: Cross multiply
    12,640.24x = 18,960.63 × 3,874.96
  4. Step 4: Simplify right side
    12,640.24x = 73,471,682.82
  5. Step 5: Solve for x
    x = 73,471,682.82/12,640.24
  6. Step 6: Final answer
    x = 5,812.52

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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.