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Finding the Fourth Proportional to 11,246.01, 15,520.70 and 8,408.49

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Solution

The fourth proportional to 11,246.01, 15,520.70 and 8,408.49 is: 11,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,246.01 : 15,520.70 = 8,408.49 : x
  2. Step 2: Convert to fraction form
    11,246.01/15,520.70 = 8,408.49/x
  3. Step 3: Cross multiply
    11,246.01x = 15,520.70 × 8,408.49
  4. Step 4: Simplify right side
    11,246.01x = 130,505,650.74
  5. Step 5: Solve for x
    x = 130,505,650.74/11,246.01
  6. Step 6: Final answer
    x = 11,604.62

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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.