Home / 8,929.86-13,374.51-7,687.38

Finding the Fourth Proportional to 8,929.86, 13,374.51 and 7,687.38

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Solution

The fourth proportional to 8,929.86, 13,374.51 and 7,687.38 is: 11,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.86 : 13,374.51 = 7,687.38 : x
  2. Step 2: Convert to fraction form
    8,929.86/13,374.51 = 7,687.38/x
  3. Step 3: Cross multiply
    8,929.86x = 13,374.51 × 7,687.38
  4. Step 4: Simplify right side
    8,929.86x = 102,814,940.68
  5. Step 5: Solve for x
    x = 102,814,940.68/8,929.86
  6. Step 6: Final answer
    x = 11,513.61

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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.