Home / 39,874.92-55,027.38-21,969.96

Finding the Fourth Proportional to 39,874.92, 55,027.38 and 21,969.96

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Solution

The fourth proportional to 39,874.92, 55,027.38 and 21,969.96 is: 30,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.92 : 55,027.38 = 21,969.96 : x
  2. Step 2: Convert to fraction form
    39,874.92/55,027.38 = 21,969.96/x
  3. Step 3: Cross multiply
    39,874.92x = 55,027.38 × 21,969.96
  4. Step 4: Simplify right side
    39,874.92x = 1,208,949,337.50
  5. Step 5: Solve for x
    x = 1,208,949,337.50/39,874.92
  6. Step 6: Final answer
    x = 30,318.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.