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Finding the Fourth Proportional to 18,640.22, 27,961.20 and 5,492.70

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Solution

The fourth proportional to 18,640.22, 27,961.20 and 5,492.70 is: 8,239.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.22 : 27,961.20 = 5,492.70 : x
  2. Step 2: Convert to fraction form
    18,640.22/27,961.20 = 5,492.70/x
  3. Step 3: Cross multiply
    18,640.22x = 27,961.20 × 5,492.70
  4. Step 4: Simplify right side
    18,640.22x = 153,582,483.24
  5. Step 5: Solve for x
    x = 153,582,483.24/18,640.22
  6. Step 6: Final answer
    x = 8,239.31

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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.