Home / 13,212.78-18,233.22-7,244.34

Finding the Fourth Proportional to 13,212.78, 18,233.22 and 7,244.34

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Solution

The fourth proportional to 13,212.78, 18,233.22 and 7,244.34 is: 9,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.78 : 18,233.22 = 7,244.34 : x
  2. Step 2: Convert to fraction form
    13,212.78/18,233.22 = 7,244.34/x
  3. Step 3: Cross multiply
    13,212.78x = 18,233.22 × 7,244.34
  4. Step 4: Simplify right side
    13,212.78x = 132,087,644.97
  5. Step 5: Solve for x
    x = 132,087,644.97/13,212.78
  6. Step 6: Final answer
    x = 9,996.96

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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.