Home / 13,289.44-18,340.26-7,321.09

Finding the Fourth Proportional to 13,289.44, 18,340.26 and 7,321.09

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Solution

The fourth proportional to 13,289.44, 18,340.26 and 7,321.09 is: 10,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.44 : 18,340.26 = 7,321.09 : x
  2. Step 2: Convert to fraction form
    13,289.44/18,340.26 = 7,321.09/x
  3. Step 3: Cross multiply
    13,289.44x = 18,340.26 × 7,321.09
  4. Step 4: Simplify right side
    13,289.44x = 134,270,694.08
  5. Step 5: Solve for x
    x = 134,270,694.08/13,289.44
  6. Step 6: Final answer
    x = 10,103.56

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Double scale
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Similar ratio
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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.