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Finding the Fourth Proportional to 8,169.45, 12,255.53 and 7,342.94

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Solution

The fourth proportional to 8,169.45, 12,255.53 and 7,342.94 is: 11,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.45 : 12,255.53 = 7,342.94 : x
  2. Step 2: Convert to fraction form
    8,169.45/12,255.53 = 7,342.94/x
  3. Step 3: Cross multiply
    8,169.45x = 12,255.53 × 7,342.94
  4. Step 4: Simplify right side
    8,169.45x = 89,991,523.47
  5. Step 5: Solve for x
    x = 89,991,523.47/8,169.45
  6. Step 6: Final answer
    x = 11,015.62

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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.