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Finding the Fourth Proportional to 16,992.45, 23,450.38 and 9,438.80

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Solution

The fourth proportional to 16,992.45, 23,450.38 and 9,438.80 is: 13,025.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,992.45 : 23,450.38 = 9,438.80 : x
  2. Step 2: Convert to fraction form
    16,992.45/23,450.38 = 9,438.80/x
  3. Step 3: Cross multiply
    16,992.45x = 23,450.38 × 9,438.80
  4. Step 4: Simplify right side
    16,992.45x = 221,343,305.90
  5. Step 5: Solve for x
    x = 221,343,305.90/16,992.45
  6. Step 6: Final answer
    x = 13,025.98

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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.