Home / 20,874.03-28,805.79-11,442.39

Finding the Fourth Proportional to 20,874.03, 28,805.79 and 11,442.39

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Solution

The fourth proportional to 20,874.03, 28,805.79 and 11,442.39 is: 15,790.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.03 : 28,805.79 = 11,442.39 : x
  2. Step 2: Convert to fraction form
    20,874.03/28,805.79 = 11,442.39/x
  3. Step 3: Cross multiply
    20,874.03x = 28,805.79 × 11,442.39
  4. Step 4: Simplify right side
    20,874.03x = 329,607,083.44
  5. Step 5: Solve for x
    x = 329,607,083.44/20,874.03
  6. Step 6: Final answer
    x = 15,790.29

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1.5x scale

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.