Home / 18,118.78-27,180.87-6,431.02

Finding the Fourth Proportional to 18,118.78, 27,180.87 and 6,431.02

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Solution

The fourth proportional to 18,118.78, 27,180.87 and 6,431.02 is: 9,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.78 : 27,180.87 = 6,431.02 : x
  2. Step 2: Convert to fraction form
    18,118.78/27,180.87 = 6,431.02/x
  3. Step 3: Cross multiply
    18,118.78x = 27,180.87 × 6,431.02
  4. Step 4: Simplify right side
    18,118.78x = 174,800,550.53
  5. Step 5: Solve for x
    x = 174,800,550.53/18,118.78
  6. Step 6: Final answer
    x = 9,647.48

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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.