Home / 18,018.55-27,009.60-8,164.90

Finding the Fourth Proportional to 18,018.55, 27,009.60 and 8,164.90

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Solution

The fourth proportional to 18,018.55, 27,009.60 and 8,164.90 is: 12,239.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.55 : 27,009.60 = 8,164.90 : x
  2. Step 2: Convert to fraction form
    18,018.55/27,009.60 = 8,164.90/x
  3. Step 3: Cross multiply
    18,018.55x = 27,009.60 × 8,164.90
  4. Step 4: Simplify right side
    18,018.55x = 220,530,683.04
  5. Step 5: Solve for x
    x = 220,530,683.04/18,018.55
  6. Step 6: Final answer
    x = 12,239.09

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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.