Home / 28,268.76-39,005.82-18,327

Finding the Fourth Proportional to 28,268.76, 39,005.82 and 18,327

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Solution

The fourth proportional to 28,268.76, 39,005.82 and 18,327 is: 25,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.76 : 39,005.82 = 18,327 : x
  2. Step 2: Convert to fraction form
    28,268.76/39,005.82 = 18,327/x
  3. Step 3: Cross multiply
    28,268.76x = 39,005.82 × 18,327
  4. Step 4: Simplify right side
    28,268.76x = 714,859,663.14
  5. Step 5: Solve for x
    x = 714,859,663.14/28,268.76
  6. Step 6: Final answer
    x = 25,287.97

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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.