Home / 13,211.38-18,232.31-7,243.50

Finding the Fourth Proportional to 13,211.38, 18,232.31 and 7,243.50

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Solution

The fourth proportional to 13,211.38, 18,232.31 and 7,243.50 is: 9,996.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.38 : 18,232.31 = 7,243.50 : x
  2. Step 2: Convert to fraction form
    13,211.38/18,232.31 = 7,243.50/x
  3. Step 3: Cross multiply
    13,211.38x = 18,232.31 × 7,243.50
  4. Step 4: Simplify right side
    13,211.38x = 132,065,755.59
  5. Step 5: Solve for x
    x = 132,065,755.59/13,211.38
  6. Step 6: Final answer
    x = 9,996.37

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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.