Home / 12,422.38-17,141.07-7,116.34

Finding the Fourth Proportional to 12,422.38, 17,141.07 and 7,116.34

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Solution

The fourth proportional to 12,422.38, 17,141.07 and 7,116.34 is: 9,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.38 : 17,141.07 = 7,116.34 : x
  2. Step 2: Convert to fraction form
    12,422.38/17,141.07 = 7,116.34/x
  3. Step 3: Cross multiply
    12,422.38x = 17,141.07 × 7,116.34
  4. Step 4: Simplify right side
    12,422.38x = 121,981,682.08
  5. Step 5: Solve for x
    x = 121,981,682.08/12,422.38
  6. Step 6: Final answer
    x = 9,819.51

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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.