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Finding the Fourth Proportional to 14,004.68, 20,996.52 and 8,456.85

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Solution

The fourth proportional to 14,004.68, 20,996.52 and 8,456.85 is: 12,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.68 : 20,996.52 = 8,456.85 : x
  2. Step 2: Convert to fraction form
    14,004.68/20,996.52 = 8,456.85/x
  3. Step 3: Cross multiply
    14,004.68x = 20,996.52 × 8,456.85
  4. Step 4: Simplify right side
    14,004.68x = 177,564,420.16
  5. Step 5: Solve for x
    x = 177,564,420.16/14,004.68
  6. Step 6: Final answer
    x = 12,678.94

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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.