Home / 39,874.65-55,027.71-21,969.53

Finding the Fourth Proportional to 39,874.65, 55,027.71 and 21,969.53

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Solution

The fourth proportional to 39,874.65, 55,027.71 and 21,969.53 is: 30,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.65 : 55,027.71 = 21,969.53 : x
  2. Step 2: Convert to fraction form
    39,874.65/55,027.71 = 21,969.53/x
  3. Step 3: Cross multiply
    39,874.65x = 55,027.71 × 21,969.53
  4. Step 4: Simplify right side
    39,874.65x = 1,208,932,650.54
  5. Step 5: Solve for x
    x = 1,208,932,650.54/39,874.65
  6. Step 6: Final answer
    x = 30,318.33

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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.