Home / 13,150.44-18,142.32-8,676.36

Finding the Fourth Proportional to 13,150.44, 18,142.32 and 8,676.36

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Solution

The fourth proportional to 13,150.44, 18,142.32 and 8,676.36 is: 11,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.44 : 18,142.32 = 8,676.36 : x
  2. Step 2: Convert to fraction form
    13,150.44/18,142.32 = 8,676.36/x
  3. Step 3: Cross multiply
    13,150.44x = 18,142.32 × 8,676.36
  4. Step 4: Simplify right side
    13,150.44x = 157,409,299.56
  5. Step 5: Solve for x
    x = 157,409,299.56/13,150.44
  6. Step 6: Final answer
    x = 11,969.89

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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.