Home / 13,391.36-18,481.60-8,086.18

Finding the Fourth Proportional to 13,391.36, 18,481.60 and 8,086.18

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Solution

The fourth proportional to 13,391.36, 18,481.60 and 8,086.18 is: 11,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.36 : 18,481.60 = 8,086.18 : x
  2. Step 2: Convert to fraction form
    13,391.36/18,481.60 = 8,086.18/x
  3. Step 3: Cross multiply
    13,391.36x = 18,481.60 × 8,086.18
  4. Step 4: Simplify right side
    13,391.36x = 149,445,544.29
  5. Step 5: Solve for x
    x = 149,445,544.29/13,391.36
  6. Step 6: Final answer
    x = 11,159.85

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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.