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Finding the Fourth Proportional to 16,230.75, 22,398.44 and 8,778.75

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Solution

The fourth proportional to 16,230.75, 22,398.44 and 8,778.75 is: 12,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,230.75 : 22,398.44 = 8,778.75 : x
  2. Step 2: Convert to fraction form
    16,230.75/22,398.44 = 8,778.75/x
  3. Step 3: Cross multiply
    16,230.75x = 22,398.44 × 8,778.75
  4. Step 4: Simplify right side
    16,230.75x = 196,630,261.26
  5. Step 5: Solve for x
    x = 196,630,261.26/16,230.75
  6. Step 6: Final answer
    x = 12,114.68

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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.