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Finding the Fourth Proportional to 22,179, 30,607.04 and 12,243

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Solution

The fourth proportional to 22,179, 30,607.04 and 12,243 is: 16,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,179 : 30,607.04 = 12,243 : x
  2. Step 2: Convert to fraction form
    22,179/30,607.04 = 12,243/x
  3. Step 3: Cross multiply
    22,179x = 30,607.04 × 12,243
  4. Step 4: Simplify right side
    22,179x = 374,721,990.72
  5. Step 5: Solve for x
    x = 374,721,990.72/22,179
  6. Step 6: Final answer
    x = 16,895.35

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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.