Home / 39,231.14-54,136.71-21,326

Finding the Fourth Proportional to 39,231.14, 54,136.71 and 21,326

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Solution

The fourth proportional to 39,231.14, 54,136.71 and 21,326 is: 29,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.14 : 54,136.71 = 21,326 : x
  2. Step 2: Convert to fraction form
    39,231.14/54,136.71 = 21,326/x
  3. Step 3: Cross multiply
    39,231.14x = 54,136.71 × 21,326
  4. Step 4: Simplify right side
    39,231.14x = 1,154,519,477.46
  5. Step 5: Solve for x
    x = 1,154,519,477.46/39,231.14
  6. Step 6: Final answer
    x = 29,428.65

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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.