Home / 39,806.24-54,932.85-21,900.78

Finding the Fourth Proportional to 39,806.24, 54,932.85 and 21,900.78

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Solution

The fourth proportional to 39,806.24, 54,932.85 and 21,900.78 is: 30,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.24 : 54,932.85 = 21,900.78 : x
  2. Step 2: Convert to fraction form
    39,806.24/54,932.85 = 21,900.78/x
  3. Step 3: Cross multiply
    39,806.24x = 54,932.85 × 21,900.78
  4. Step 4: Simplify right side
    39,806.24x = 1,203,072,262.62
  5. Step 5: Solve for x
    x = 1,203,072,262.62/39,806.24
  6. Step 6: Final answer
    x = 30,223.21

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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.