Home / 11,765.53-16,236.72-6,388.20

Finding the Fourth Proportional to 11,765.53, 16,236.72 and 6,388.20

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Solution

The fourth proportional to 11,765.53, 16,236.72 and 6,388.20 is: 8,815.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.53 : 16,236.72 = 6,388.20 : x
  2. Step 2: Convert to fraction form
    11,765.53/16,236.72 = 6,388.20/x
  3. Step 3: Cross multiply
    11,765.53x = 16,236.72 × 6,388.20
  4. Step 4: Simplify right side
    11,765.53x = 103,723,301.58
  5. Step 5: Solve for x
    x = 103,723,301.58/11,765.53
  6. Step 6: Final answer
    x = 8,815.86

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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.