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Finding the Fourth Proportional to 30,255.88, 45,383.84 and 9,481

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Solution

The fourth proportional to 30,255.88, 45,383.84 and 9,481 is: 14,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.88 : 45,383.84 = 9,481 : x
  2. Step 2: Convert to fraction form
    30,255.88/45,383.84 = 9,481/x
  3. Step 3: Cross multiply
    30,255.88x = 45,383.84 × 9,481
  4. Step 4: Simplify right side
    30,255.88x = 430,284,187.04
  5. Step 5: Solve for x
    x = 430,284,187.04/30,255.88
  6. Step 6: Final answer
    x = 14,221.51

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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.