Home / 12,414.90-17,115.79-8,429.09

Finding the Fourth Proportional to 12,414.90, 17,115.79 and 8,429.09

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Solution

The fourth proportional to 12,414.90, 17,115.79 and 8,429.09 is: 11,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,414.90 : 17,115.79 = 8,429.09 : x
  2. Step 2: Convert to fraction form
    12,414.90/17,115.79 = 8,429.09/x
  3. Step 3: Cross multiply
    12,414.90x = 17,115.79 × 8,429.09
  4. Step 4: Simplify right side
    12,414.90x = 144,270,587.66
  5. Step 5: Solve for x
    x = 144,270,587.66/12,414.90
  6. Step 6: Final answer
    x = 11,620.76

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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.