Home / 39,816.63-54,945.75-21,911.61

Finding the Fourth Proportional to 39,816.63, 54,945.75 and 21,911.61

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Solution

The fourth proportional to 39,816.63, 54,945.75 and 21,911.61 is: 30,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.63 : 54,945.75 = 21,911.61 : x
  2. Step 2: Convert to fraction form
    39,816.63/54,945.75 = 21,911.61/x
  3. Step 3: Cross multiply
    39,816.63x = 54,945.75 × 21,911.61
  4. Step 4: Simplify right side
    39,816.63x = 1,203,949,845.16
  5. Step 5: Solve for x
    x = 1,203,949,845.16/39,816.63
  6. Step 6: Final answer
    x = 30,237.36

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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.