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Finding the Fourth Proportional to 13,212.59, 18,233.62 and 7,243.90

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Solution

The fourth proportional to 13,212.59, 18,233.62 and 7,243.90 is: 9,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.59 : 18,233.62 = 7,243.90 : x
  2. Step 2: Convert to fraction form
    13,212.59/18,233.62 = 7,243.90/x
  3. Step 3: Cross multiply
    13,212.59x = 18,233.62 × 7,243.90
  4. Step 4: Simplify right side
    13,212.59x = 132,082,456.22
  5. Step 5: Solve for x
    x = 132,082,456.22/13,212.59
  6. Step 6: Final answer
    x = 9,996.72

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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.