Home / 13,213.55-18,234.69-7,245.32

Finding the Fourth Proportional to 13,213.55, 18,234.69 and 7,245.32

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Solution

The fourth proportional to 13,213.55, 18,234.69 and 7,245.32 is: 9,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.55 : 18,234.69 = 7,245.32 : x
  2. Step 2: Convert to fraction form
    13,213.55/18,234.69 = 7,245.32/x
  3. Step 3: Cross multiply
    13,213.55x = 18,234.69 × 7,245.32
  4. Step 4: Simplify right side
    13,213.55x = 132,116,072.98
  5. Step 5: Solve for x
    x = 132,116,072.98/13,213.55
  6. Step 6: Final answer
    x = 9,998.53

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Half scale
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Double scale
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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.