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Finding the Fourth Proportional to 18,150.21, 27,220.41 and 4,999.41

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Solution

The fourth proportional to 18,150.21, 27,220.41 and 4,999.41 is: 7,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150.21 : 27,220.41 = 4,999.41 : x
  2. Step 2: Convert to fraction form
    18,150.21/27,220.41 = 4,999.41/x
  3. Step 3: Cross multiply
    18,150.21x = 27,220.41 × 4,999.41
  4. Step 4: Simplify right side
    18,150.21x = 136,085,989.96
  5. Step 5: Solve for x
    x = 136,085,989.96/18,150.21
  6. Step 6: Final answer
    x = 7,497.76

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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.