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Finding the Fourth Proportional to 12,563.78, 18,845.46 and 3,798.77

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Solution

The fourth proportional to 12,563.78, 18,845.46 and 3,798.77 is: 5,698.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.78 : 18,845.46 = 3,798.77 : x
  2. Step 2: Convert to fraction form
    12,563.78/18,845.46 = 3,798.77/x
  3. Step 3: Cross multiply
    12,563.78x = 18,845.46 × 3,798.77
  4. Step 4: Simplify right side
    12,563.78x = 71,589,473.86
  5. Step 5: Solve for x
    x = 71,589,473.86/12,563.78
  6. Step 6: Final answer
    x = 5,698.09

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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.