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Finding the Fourth Proportional to 14,885.58, 20,542.02 and 8,171.32

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Solution

The fourth proportional to 14,885.58, 20,542.02 and 8,171.32 is: 11,276.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,885.58 : 20,542.02 = 8,171.32 : x
  2. Step 2: Convert to fraction form
    14,885.58/20,542.02 = 8,171.32/x
  3. Step 3: Cross multiply
    14,885.58x = 20,542.02 × 8,171.32
  4. Step 4: Simplify right side
    14,885.58x = 167,855,418.87
  5. Step 5: Solve for x
    x = 167,855,418.87/14,885.58
  6. Step 6: Final answer
    x = 11,276.38

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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.