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Finding the Fourth Proportional to 38,958.27, 53,762.43 and 21,053.27

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Solution

The fourth proportional to 38,958.27, 53,762.43 and 21,053.27 is: 29,053.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,958.27 : 53,762.43 = 21,053.27 : x
  2. Step 2: Convert to fraction form
    38,958.27/53,762.43 = 21,053.27/x
  3. Step 3: Cross multiply
    38,958.27x = 53,762.43 × 21,053.27
  4. Step 4: Simplify right side
    38,958.27x = 1,131,874,954.65
  5. Step 5: Solve for x
    x = 1,131,874,954.65/38,958.27
  6. Step 6: Final answer
    x = 29,053.52

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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.