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Finding the Fourth Proportional to 21,482.78, 29,644.25 and 12,049.52

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Solution

The fourth proportional to 21,482.78, 29,644.25 and 12,049.52 is: 16,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.78 : 29,644.25 = 12,049.52 : x
  2. Step 2: Convert to fraction form
    21,482.78/29,644.25 = 12,049.52/x
  3. Step 3: Cross multiply
    21,482.78x = 29,644.25 × 12,049.52
  4. Step 4: Simplify right side
    21,482.78x = 357,198,923.01
  5. Step 5: Solve for x
    x = 357,198,923.01/21,482.78
  6. Step 6: Final answer
    x = 16,627.22

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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.