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Finding the Fourth Proportional to 12,563.10, 18,844.62 and 9,791.85

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Solution

The fourth proportional to 12,563.10, 18,844.62 and 9,791.85 is: 14,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.10 : 18,844.62 = 9,791.85 : x
  2. Step 2: Convert to fraction form
    12,563.10/18,844.62 = 9,791.85/x
  3. Step 3: Cross multiply
    12,563.10x = 18,844.62 × 9,791.85
  4. Step 4: Simplify right side
    12,563.10x = 184,523,649.91
  5. Step 5: Solve for x
    x = 184,523,649.91/12,563.10
  6. Step 6: Final answer
    x = 14,687.75

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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.