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Finding the Fourth Proportional to 16,396.44, 22,621.74 and 9,679.80

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Solution

The fourth proportional to 16,396.44, 22,621.74 and 9,679.80 is: 13,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,396.44 : 22,621.74 = 9,679.80 : x
  2. Step 2: Convert to fraction form
    16,396.44/22,621.74 = 9,679.80/x
  3. Step 3: Cross multiply
    16,396.44x = 22,621.74 × 9,679.80
  4. Step 4: Simplify right side
    16,396.44x = 218,973,918.85
  5. Step 5: Solve for x
    x = 218,973,918.85/16,396.44
  6. Step 6: Final answer
    x = 13,354.97

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1.5x scale

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.