Home / 39,636.87-54,699.13-21,732.09

Finding the Fourth Proportional to 39,636.87, 54,699.13 and 21,732.09

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Solution

The fourth proportional to 39,636.87, 54,699.13 and 21,732.09 is: 29,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,636.87 : 54,699.13 = 21,732.09 : x
  2. Step 2: Convert to fraction form
    39,636.87/54,699.13 = 21,732.09/x
  3. Step 3: Cross multiply
    39,636.87x = 54,699.13 × 21,732.09
  4. Step 4: Simplify right side
    39,636.87x = 1,188,726,416.08
  5. Step 5: Solve for x
    x = 1,188,726,416.08/39,636.87
  6. Step 6: Final answer
    x = 29,990.42

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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.