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Finding the Fourth Proportional to 17,785.17, 26,659.31 and 7,929.09

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Solution

The fourth proportional to 17,785.17, 26,659.31 and 7,929.09 is: 11,885.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,785.17 : 26,659.31 = 7,929.09 : x
  2. Step 2: Convert to fraction form
    17,785.17/26,659.31 = 7,929.09/x
  3. Step 3: Cross multiply
    17,785.17x = 26,659.31 × 7,929.09
  4. Step 4: Simplify right side
    17,785.17x = 211,384,028.68
  5. Step 5: Solve for x
    x = 211,384,028.68/17,785.17
  6. Step 6: Final answer
    x = 11,885.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.