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Finding the Fourth Proportional to 18,311.20, 27,465.20 and 5,999.20

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Solution

The fourth proportional to 18,311.20, 27,465.20 and 5,999.20 is: 8,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.20 : 27,465.20 = 5,999.20 : x
  2. Step 2: Convert to fraction form
    18,311.20/27,465.20 = 5,999.20/x
  3. Step 3: Cross multiply
    18,311.20x = 27,465.20 × 5,999.20
  4. Step 4: Simplify right side
    18,311.20x = 164,769,227.84
  5. Step 5: Solve for x
    x = 164,769,227.84/18,311.20
  6. Step 6: Final answer
    x = 8,998.28

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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.