Home / 13,213.32-18,234.34-7,245.17

Finding the Fourth Proportional to 13,213.32, 18,234.34 and 7,245.17

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Solution

The fourth proportional to 13,213.32, 18,234.34 and 7,245.17 is: 9,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.32 : 18,234.34 = 7,245.17 : x
  2. Step 2: Convert to fraction form
    13,213.32/18,234.34 = 7,245.17/x
  3. Step 3: Cross multiply
    13,213.32x = 18,234.34 × 7,245.17
  4. Step 4: Simplify right side
    13,213.32x = 132,110,893.14
  5. Step 5: Solve for x
    x = 132,110,893.14/13,213.32
  6. Step 6: Final answer
    x = 9,998.31

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Half scale
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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.