Home / 12,519.44-17,278.83-7,143.62

Finding the Fourth Proportional to 12,519.44, 17,278.83 and 7,143.62

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Solution

The fourth proportional to 12,519.44, 17,278.83 and 7,143.62 is: 9,859.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.44 : 17,278.83 = 7,143.62 : x
  2. Step 2: Convert to fraction form
    12,519.44/17,278.83 = 7,143.62/x
  3. Step 3: Cross multiply
    12,519.44x = 17,278.83 × 7,143.62
  4. Step 4: Simplify right side
    12,519.44x = 123,433,395.56
  5. Step 5: Solve for x
    x = 123,433,395.56/12,519.44
  6. Step 6: Final answer
    x = 9,859.34

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Half scale
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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.