Home / 18,118.42-27,181.72-6,431.64

Finding the Fourth Proportional to 18,118.42, 27,181.72 and 6,431.64

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Solution

The fourth proportional to 18,118.42, 27,181.72 and 6,431.64 is: 9,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.42 : 27,181.72 = 6,431.64 : x
  2. Step 2: Convert to fraction form
    18,118.42/27,181.72 = 6,431.64/x
  3. Step 3: Cross multiply
    18,118.42x = 27,181.72 × 6,431.64
  4. Step 4: Simplify right side
    18,118.42x = 174,823,037.62
  5. Step 5: Solve for x
    x = 174,823,037.62/18,118.42
  6. Step 6: Final answer
    x = 9,648.91

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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.