Home / 39,947.76-55,128.09-22,043.28

Finding the Fourth Proportional to 39,947.76, 55,128.09 and 22,043.28

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Solution

The fourth proportional to 39,947.76, 55,128.09 and 22,043.28 is: 30,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,947.76 : 55,128.09 = 22,043.28 : x
  2. Step 2: Convert to fraction form
    39,947.76/55,128.09 = 22,043.28/x
  3. Step 3: Cross multiply
    39,947.76x = 55,128.09 × 22,043.28
  4. Step 4: Simplify right side
    39,947.76x = 1,215,203,923.74
  5. Step 5: Solve for x
    x = 1,215,203,923.74/39,947.76
  6. Step 6: Final answer
    x = 30,419.83

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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.