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Finding the Fourth Proportional to 12,227.70, 18,342.15 and 6,395.70

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Solution

The fourth proportional to 12,227.70, 18,342.15 and 6,395.70 is: 9,593.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.70 : 18,342.15 = 6,395.70 : x
  2. Step 2: Convert to fraction form
    12,227.70/18,342.15 = 6,395.70/x
  3. Step 3: Cross multiply
    12,227.70x = 18,342.15 × 6,395.70
  4. Step 4: Simplify right side
    12,227.70x = 117,310,888.76
  5. Step 5: Solve for x
    x = 117,310,888.76/12,227.70
  6. Step 6: Final answer
    x = 9,593.86

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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.