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Finding the Fourth Proportional to 16,920.80, 25,396.54 and 9,029.98

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Solution

The fourth proportional to 16,920.80, 25,396.54 and 9,029.98 is: 13,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.80 : 25,396.54 = 9,029.98 : x
  2. Step 2: Convert to fraction form
    16,920.80/25,396.54 = 9,029.98/x
  3. Step 3: Cross multiply
    16,920.80x = 25,396.54 × 9,029.98
  4. Step 4: Simplify right side
    16,920.80x = 229,330,257.44
  5. Step 5: Solve for x
    x = 229,330,257.44/16,920.80
  6. Step 6: Final answer
    x = 13,553.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.