Home / 13,450-18,546.96-8,142.88

Finding the Fourth Proportional to 13,450, 18,546.96 and 8,142.88

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Solution

The fourth proportional to 13,450, 18,546.96 and 8,142.88 is: 11,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450 : 18,546.96 = 8,142.88 : x
  2. Step 2: Convert to fraction form
    13,450/18,546.96 = 8,142.88/x
  3. Step 3: Cross multiply
    13,450x = 18,546.96 × 8,142.88
  4. Step 4: Simplify right side
    13,450x = 151,025,669.64
  5. Step 5: Solve for x
    x = 151,025,669.64/13,450
  6. Step 6: Final answer
    x = 11,228.67

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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.