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Finding the Fourth Proportional to 20,251, 30,392.16 and 14,054.52

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Solution

The fourth proportional to 20,251, 30,392.16 and 14,054.52 is: 21,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251 : 30,392.16 = 14,054.52 : x
  2. Step 2: Convert to fraction form
    20,251/30,392.16 = 14,054.52/x
  3. Step 3: Cross multiply
    20,251x = 30,392.16 × 14,054.52
  4. Step 4: Simplify right side
    20,251x = 427,147,220.56
  5. Step 5: Solve for x
    x = 427,147,220.56/20,251
  6. Step 6: Final answer
    x = 21,092.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.