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Finding the Fourth Proportional to 20,392.73, 28,125.73 and 16,849.79

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Solution

The fourth proportional to 20,392.73, 28,125.73 and 16,849.79 is: 23,239.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.73 : 28,125.73 = 16,849.79 : x
  2. Step 2: Convert to fraction form
    20,392.73/28,125.73 = 16,849.79/x
  3. Step 3: Cross multiply
    20,392.73x = 28,125.73 × 16,849.79
  4. Step 4: Simplify right side
    20,392.73x = 473,912,644.10
  5. Step 5: Solve for x
    x = 473,912,644.10/20,392.73
  6. Step 6: Final answer
    x = 23,239.29

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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.