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Finding the Fourth Proportional to 30,152.88, 41,604.49 and 18,213.91

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Solution

The fourth proportional to 30,152.88, 41,604.49 and 18,213.91 is: 25,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,152.88 : 41,604.49 = 18,213.91 : x
  2. Step 2: Convert to fraction form
    30,152.88/41,604.49 = 18,213.91/x
  3. Step 3: Cross multiply
    30,152.88x = 41,604.49 × 18,213.91
  4. Step 4: Simplify right side
    30,152.88x = 757,780,486.78
  5. Step 5: Solve for x
    x = 757,780,486.78/30,152.88
  6. Step 6: Final answer
    x = 25,131.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.