Home / 39,872.96-55,018.68-22,642.64

Finding the Fourth Proportional to 39,872.96, 55,018.68 and 22,642.64

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Solution

The fourth proportional to 39,872.96, 55,018.68 and 22,642.64 is: 31,243.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.96 : 55,018.68 = 22,642.64 : x
  2. Step 2: Convert to fraction form
    39,872.96/55,018.68 = 22,642.64/x
  3. Step 3: Cross multiply
    39,872.96x = 55,018.68 × 22,642.64
  4. Step 4: Simplify right side
    39,872.96x = 1,245,768,164.52
  5. Step 5: Solve for x
    x = 1,245,768,164.52/39,872.96
  6. Step 6: Final answer
    x = 31,243.43

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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.