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Finding the Fourth Proportional to 16,135.21, 22,266.88 and 8,965.79

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Solution

The fourth proportional to 16,135.21, 22,266.88 and 8,965.79 is: 12,372.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,135.21 : 22,266.88 = 8,965.79 : x
  2. Step 2: Convert to fraction form
    16,135.21/22,266.88 = 8,965.79/x
  3. Step 3: Cross multiply
    16,135.21x = 22,266.88 × 8,965.79
  4. Step 4: Simplify right side
    16,135.21x = 199,640,119.79
  5. Step 5: Solve for x
    x = 199,640,119.79/16,135.21
  6. Step 6: Final answer
    x = 12,372.95

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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.