Home / 13,391.04-18,481.56-8,086.62

Finding the Fourth Proportional to 13,391.04, 18,481.56 and 8,086.62

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Solution

The fourth proportional to 13,391.04, 18,481.56 and 8,086.62 is: 11,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.04 : 18,481.56 = 8,086.62 : x
  2. Step 2: Convert to fraction form
    13,391.04/18,481.56 = 8,086.62/x
  3. Step 3: Cross multiply
    13,391.04x = 18,481.56 × 8,086.62
  4. Step 4: Simplify right side
    13,391.04x = 149,453,352.73
  5. Step 5: Solve for x
    x = 149,453,352.73/13,391.04
  6. Step 6: Final answer
    x = 11,160.70

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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.