Home / 13,219.38-18,243.25-7,251.30

Finding the Fourth Proportional to 13,219.38, 18,243.25 and 7,251.30

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Solution

The fourth proportional to 13,219.38, 18,243.25 and 7,251.30 is: 10,007.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.38 : 18,243.25 = 7,251.30 : x
  2. Step 2: Convert to fraction form
    13,219.38/18,243.25 = 7,251.30/x
  3. Step 3: Cross multiply
    13,219.38x = 18,243.25 × 7,251.30
  4. Step 4: Simplify right side
    13,219.38x = 132,287,278.73
  5. Step 5: Solve for x
    x = 132,287,278.73/13,219.38
  6. Step 6: Final answer
    x = 10,007.07

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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.