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Finding the Fourth Proportional to 20,897.73, 28,843.47 and 14,446.44

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Solution

The fourth proportional to 20,897.73, 28,843.47 and 14,446.44 is: 19,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.73 : 28,843.47 = 14,446.44 : x
  2. Step 2: Convert to fraction form
    20,897.73/28,843.47 = 14,446.44/x
  3. Step 3: Cross multiply
    20,897.73x = 28,843.47 × 14,446.44
  4. Step 4: Simplify right side
    20,897.73x = 416,685,458.75
  5. Step 5: Solve for x
    x = 416,685,458.75/20,897.73
  6. Step 6: Final answer
    x = 19,939.27

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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.