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Finding the Fourth Proportional to 22,195.86, 30,630.12 and 12,124.30

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Solution

The fourth proportional to 22,195.86, 30,630.12 and 12,124.30 is: 16,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.86 : 30,630.12 = 12,124.30 : x
  2. Step 2: Convert to fraction form
    22,195.86/30,630.12 = 12,124.30/x
  3. Step 3: Cross multiply
    22,195.86x = 30,630.12 × 12,124.30
  4. Step 4: Simplify right side
    22,195.86x = 371,368,763.92
  5. Step 5: Solve for x
    x = 371,368,763.92/22,195.86
  6. Step 6: Final answer
    x = 16,731.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.