Home / 39,806.72-54,932.67-21,900.65

Finding the Fourth Proportional to 39,806.72, 54,932.67 and 21,900.65

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Solution

The fourth proportional to 39,806.72, 54,932.67 and 21,900.65 is: 30,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.72 : 54,932.67 = 21,900.65 : x
  2. Step 2: Convert to fraction form
    39,806.72/54,932.67 = 21,900.65/x
  3. Step 3: Cross multiply
    39,806.72x = 54,932.67 × 21,900.65
  4. Step 4: Simplify right side
    39,806.72x = 1,203,061,179.24
  5. Step 5: Solve for x
    x = 1,203,061,179.24/39,806.72
  6. Step 6: Final answer
    x = 30,222.56

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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.