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Finding the Fourth Proportional to 12,393.71, 18,593.31 and 5,819.99

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Solution

The fourth proportional to 12,393.71, 18,593.31 and 5,819.99 is: 8,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.71 : 18,593.31 = 5,819.99 : x
  2. Step 2: Convert to fraction form
    12,393.71/18,593.31 = 5,819.99/x
  3. Step 3: Cross multiply
    12,393.71x = 18,593.31 × 5,819.99
  4. Step 4: Simplify right side
    12,393.71x = 108,212,878.27
  5. Step 5: Solve for x
    x = 108,212,878.27/12,393.71
  6. Step 6: Final answer
    x = 8,731.27

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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.