Home / 13,245.75-18,279.15-7,277.43

Finding the Fourth Proportional to 13,245.75, 18,279.15 and 7,277.43

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Solution

The fourth proportional to 13,245.75, 18,279.15 and 7,277.43 is: 10,042.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.75 : 18,279.15 = 7,277.43 : x
  2. Step 2: Convert to fraction form
    13,245.75/18,279.15 = 7,277.43/x
  3. Step 3: Cross multiply
    13,245.75x = 18,279.15 × 7,277.43
  4. Step 4: Simplify right side
    13,245.75x = 133,025,234.58
  5. Step 5: Solve for x
    x = 133,025,234.58/13,245.75
  6. Step 6: Final answer
    x = 10,042.86

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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.