Home / 12,640.86-18,962.22-3,874.62

Finding the Fourth Proportional to 12,640.86, 18,962.22 and 3,874.62

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Solution

The fourth proportional to 12,640.86, 18,962.22 and 3,874.62 is: 5,812.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.86 : 18,962.22 = 3,874.62 : x
  2. Step 2: Convert to fraction form
    12,640.86/18,962.22 = 3,874.62/x
  3. Step 3: Cross multiply
    12,640.86x = 18,962.22 × 3,874.62
  4. Step 4: Simplify right side
    12,640.86x = 73,471,396.86
  5. Step 5: Solve for x
    x = 73,471,396.86/12,640.86
  6. Step 6: Final answer
    x = 5,812.22

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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.