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Finding the Fourth Proportional to 12,388.37, 18,591.02 and 4,993.41

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Solution

The fourth proportional to 12,388.37, 18,591.02 and 4,993.41 is: 7,493.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.37 : 18,591.02 = 4,993.41 : x
  2. Step 2: Convert to fraction form
    12,388.37/18,591.02 = 4,993.41/x
  3. Step 3: Cross multiply
    12,388.37x = 18,591.02 × 4,993.41
  4. Step 4: Simplify right side
    12,388.37x = 92,832,560.21
  5. Step 5: Solve for x
    x = 92,832,560.21/12,388.37
  6. Step 6: Final answer
    x = 7,493.52

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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.