Home / 30,481.75-45,682.53-12,929.86

Finding the Fourth Proportional to 30,481.75, 45,682.53 and 12,929.86

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Solution

The fourth proportional to 30,481.75, 45,682.53 and 12,929.86 is: 19,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.75 : 45,682.53 = 12,929.86 : x
  2. Step 2: Convert to fraction form
    30,481.75/45,682.53 = 12,929.86/x
  3. Step 3: Cross multiply
    30,481.75x = 45,682.53 × 12,929.86
  4. Step 4: Simplify right side
    30,481.75x = 590,668,717.35
  5. Step 5: Solve for x
    x = 590,668,717.35/30,481.75
  6. Step 6: Final answer
    x = 19,377.78

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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.