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Finding the Fourth Proportional to 30,481.92, 45,721.67 and 11,753.91

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Solution

The fourth proportional to 30,481.92, 45,721.67 and 11,753.91 is: 17,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.92 : 45,721.67 = 11,753.91 : x
  2. Step 2: Convert to fraction form
    30,481.92/45,721.67 = 11,753.91/x
  3. Step 3: Cross multiply
    30,481.92x = 45,721.67 × 11,753.91
  4. Step 4: Simplify right side
    30,481.92x = 537,408,335.46
  5. Step 5: Solve for x
    x = 537,408,335.46/30,481.92
  6. Step 6: Final answer
    x = 17,630.40

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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.