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Finding the Fourth Proportional to 14,796, 20,418.48 and 8,172

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Solution

The fourth proportional to 14,796, 20,418.48 and 8,172 is: 11,277.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,796 : 20,418.48 = 8,172 : x
  2. Step 2: Convert to fraction form
    14,796/20,418.48 = 8,172/x
  3. Step 3: Cross multiply
    14,796x = 20,418.48 × 8,172
  4. Step 4: Simplify right side
    14,796x = 166,859,818.56
  5. Step 5: Solve for x
    x = 166,859,818.56/14,796
  6. Step 6: Final answer
    x = 11,277.36

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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.