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Finding the Fourth Proportional to 12,503.62, 18,755.70 and 3,738.88

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Solution

The fourth proportional to 12,503.62, 18,755.70 and 3,738.88 is: 5,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.62 : 18,755.70 = 3,738.88 : x
  2. Step 2: Convert to fraction form
    12,503.62/18,755.70 = 3,738.88/x
  3. Step 3: Cross multiply
    12,503.62x = 18,755.70 × 3,738.88
  4. Step 4: Simplify right side
    12,503.62x = 70,125,311.62
  5. Step 5: Solve for x
    x = 70,125,311.62/12,503.62
  6. Step 6: Final answer
    x = 5,608.40

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1.5x scale

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.