Home / 13,512.92-18,640.04-8,131.62

Finding the Fourth Proportional to 13,512.92, 18,640.04 and 8,131.62

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Solution

The fourth proportional to 13,512.92, 18,640.04 and 8,131.62 is: 11,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.92 : 18,640.04 = 8,131.62 : x
  2. Step 2: Convert to fraction form
    13,512.92/18,640.04 = 8,131.62/x
  3. Step 3: Cross multiply
    13,512.92x = 18,640.04 × 8,131.62
  4. Step 4: Simplify right side
    13,512.92x = 151,573,722.06
  5. Step 5: Solve for x
    x = 151,573,722.06/13,512.92
  6. Step 6: Final answer
    x = 11,216.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.