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Finding the Fourth Proportional to 14,791.19, 20,410.02 and 8,418.62

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Solution

The fourth proportional to 14,791.19, 20,410.02 and 8,418.62 is: 11,616.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.19 : 20,410.02 = 8,418.62 : x
  2. Step 2: Convert to fraction form
    14,791.19/20,410.02 = 8,418.62/x
  3. Step 3: Cross multiply
    14,791.19x = 20,410.02 × 8,418.62
  4. Step 4: Simplify right side
    14,791.19x = 171,824,100.52
  5. Step 5: Solve for x
    x = 171,824,100.52/14,791.19
  6. Step 6: Final answer
    x = 11,616.66

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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.