Home / 39,764.36-54,871.62-21,858.92

Finding the Fourth Proportional to 39,764.36, 54,871.62 and 21,858.92

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Solution

The fourth proportional to 39,764.36, 54,871.62 and 21,858.92 is: 30,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.36 : 54,871.62 = 21,858.92 : x
  2. Step 2: Convert to fraction form
    39,764.36/54,871.62 = 21,858.92/x
  3. Step 3: Cross multiply
    39,764.36x = 54,871.62 × 21,858.92
  4. Step 4: Simplify right side
    39,764.36x = 1,199,434,351.85
  5. Step 5: Solve for x
    x = 1,199,434,351.85/39,764.36
  6. Step 6: Final answer
    x = 30,163.55

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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.