Home / 11,929.38-17,881.77-8,634.30

Finding the Fourth Proportional to 11,929.38, 17,881.77 and 8,634.30

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Solution

The fourth proportional to 11,929.38, 17,881.77 and 8,634.30 is: 12,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.38 : 17,881.77 = 8,634.30 : x
  2. Step 2: Convert to fraction form
    11,929.38/17,881.77 = 8,634.30/x
  3. Step 3: Cross multiply
    11,929.38x = 17,881.77 × 8,634.30
  4. Step 4: Simplify right side
    11,929.38x = 154,396,566.71
  5. Step 5: Solve for x
    x = 154,396,566.71/11,929.38
  6. Step 6: Final answer
    x = 12,942.55

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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.