Home / 39,687.65-54,767.23-21,782.96

Finding the Fourth Proportional to 39,687.65, 54,767.23 and 21,782.96

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Solution

The fourth proportional to 39,687.65, 54,767.23 and 21,782.96 is: 30,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,687.65 : 54,767.23 = 21,782.96 : x
  2. Step 2: Convert to fraction form
    39,687.65/54,767.23 = 21,782.96/x
  3. Step 3: Cross multiply
    39,687.65x = 54,767.23 × 21,782.96
  4. Step 4: Simplify right side
    39,687.65x = 1,192,992,380.40
  5. Step 5: Solve for x
    x = 1,192,992,380.40/39,687.65
  6. Step 6: Final answer
    x = 30,059.54

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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.