Home / 39,887.62-55,042.66-21,982.56

Finding the Fourth Proportional to 39,887.62, 55,042.66 and 21,982.56

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Solution

The fourth proportional to 39,887.62, 55,042.66 and 21,982.56 is: 30,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.62 : 55,042.66 = 21,982.56 : x
  2. Step 2: Convert to fraction form
    39,887.62/55,042.66 = 21,982.56/x
  3. Step 3: Cross multiply
    39,887.62x = 55,042.66 × 21,982.56
  4. Step 4: Simplify right side
    39,887.62x = 1,209,978,576.01
  5. Step 5: Solve for x
    x = 1,209,978,576.01/39,887.62
  6. Step 6: Final answer
    x = 30,334.69

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1.5x scale

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.