Home / 18,120.40-27,183.32-6,432.64

Finding the Fourth Proportional to 18,120.40, 27,183.32 and 6,432.64

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Solution

The fourth proportional to 18,120.40, 27,183.32 and 6,432.64 is: 9,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.40 : 27,183.32 = 6,432.64 : x
  2. Step 2: Convert to fraction form
    18,120.40/27,183.32 = 6,432.64/x
  3. Step 3: Cross multiply
    18,120.40x = 27,183.32 × 6,432.64
  4. Step 4: Simplify right side
    18,120.40x = 174,860,511.56
  5. Step 5: Solve for x
    x = 174,860,511.56/18,120.40
  6. Step 6: Final answer
    x = 9,649.93

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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.