Home / 12,519.73-17,279.13-7,142.14

Finding the Fourth Proportional to 12,519.73, 17,279.13 and 7,142.14

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Solution

The fourth proportional to 12,519.73, 17,279.13 and 7,142.14 is: 9,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.73 : 17,279.13 = 7,142.14 : x
  2. Step 2: Convert to fraction form
    12,519.73/17,279.13 = 7,142.14/x
  3. Step 3: Cross multiply
    12,519.73x = 17,279.13 × 7,142.14
  4. Step 4: Simplify right side
    12,519.73x = 123,409,965.54
  5. Step 5: Solve for x
    x = 123,409,965.54/12,519.73
  6. Step 6: Final answer
    x = 9,857.24

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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.