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Finding the Fourth Proportional to 13,874.94, 20,812.44 and 4,640.94

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Solution

The fourth proportional to 13,874.94, 20,812.44 and 4,640.94 is: 6,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,874.94 : 20,812.44 = 4,640.94 : x
  2. Step 2: Convert to fraction form
    13,874.94/20,812.44 = 4,640.94/x
  3. Step 3: Cross multiply
    13,874.94x = 20,812.44 × 4,640.94
  4. Step 4: Simplify right side
    13,874.94x = 96,589,285.29
  5. Step 5: Solve for x
    x = 96,589,285.29/13,874.94
  6. Step 6: Final answer
    x = 6,961.42

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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.