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Finding the Fourth Proportional to 22,079, 30,469.04 and 12,143

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Solution

The fourth proportional to 22,079, 30,469.04 and 12,143 is: 16,757.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,079 : 30,469.04 = 12,143 : x
  2. Step 2: Convert to fraction form
    22,079/30,469.04 = 12,143/x
  3. Step 3: Cross multiply
    22,079x = 30,469.04 × 12,143
  4. Step 4: Simplify right side
    22,079x = 369,985,552.72
  5. Step 5: Solve for x
    x = 369,985,552.72/22,079
  6. Step 6: Final answer
    x = 16,757.35

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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.