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Finding the Fourth Proportional to 14,978.41, 20,669.88 and 8,263.97

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Solution

The fourth proportional to 14,978.41, 20,669.88 and 8,263.97 is: 11,404.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978.41 : 20,669.88 = 8,263.97 : x
  2. Step 2: Convert to fraction form
    14,978.41/20,669.88 = 8,263.97/x
  3. Step 3: Cross multiply
    14,978.41x = 20,669.88 × 8,263.97
  4. Step 4: Simplify right side
    14,978.41x = 170,815,389.64
  5. Step 5: Solve for x
    x = 170,815,389.64/14,978.41
  6. Step 6: Final answer
    x = 11,404.11

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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.