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Finding the Fourth Proportional to 12,322.82, 18,470.99 and 6,393.78

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Solution

The fourth proportional to 12,322.82, 18,470.99 and 6,393.78 is: 9,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.82 : 18,470.99 = 6,393.78 : x
  2. Step 2: Convert to fraction form
    12,322.82/18,470.99 = 6,393.78/x
  3. Step 3: Cross multiply
    12,322.82x = 18,470.99 × 6,393.78
  4. Step 4: Simplify right side
    12,322.82x = 118,099,462.43
  5. Step 5: Solve for x
    x = 118,099,462.43/12,322.82
  6. Step 6: Final answer
    x = 9,583.80

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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.