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Finding the Fourth Proportional to 11,693.58, 16,137.07 and 6,388.39

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Solution

The fourth proportional to 11,693.58, 16,137.07 and 6,388.39 is: 8,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,693.58 : 16,137.07 = 6,388.39 : x
  2. Step 2: Convert to fraction form
    11,693.58/16,137.07 = 6,388.39/x
  3. Step 3: Cross multiply
    11,693.58x = 16,137.07 × 6,388.39
  4. Step 4: Simplify right side
    11,693.58x = 103,089,896.62
  5. Step 5: Solve for x
    x = 103,089,896.62/11,693.58
  6. Step 6: Final answer
    x = 8,815.94

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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.