Home / 12,520.88-18,784.20-3,755.97

Finding the Fourth Proportional to 12,520.88, 18,784.20 and 3,755.97

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Solution

The fourth proportional to 12,520.88, 18,784.20 and 3,755.97 is: 5,634.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.88 : 18,784.20 = 3,755.97 : x
  2. Step 2: Convert to fraction form
    12,520.88/18,784.20 = 3,755.97/x
  3. Step 3: Cross multiply
    12,520.88x = 18,784.20 × 3,755.97
  4. Step 4: Simplify right side
    12,520.88x = 70,552,905.76
  5. Step 5: Solve for x
    x = 70,552,905.76/12,520.88
  6. Step 6: Final answer
    x = 5,634.82

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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.