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Finding the Fourth Proportional to 16,213.98, 22,375 and 9,140.41

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Solution

The fourth proportional to 16,213.98, 22,375 and 9,140.41 is: 12,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,213.98 : 22,375 = 9,140.41 : x
  2. Step 2: Convert to fraction form
    16,213.98/22,375 = 9,140.41/x
  3. Step 3: Cross multiply
    16,213.98x = 22,375 × 9,140.41
  4. Step 4: Simplify right side
    16,213.98x = 204,516,673.75
  5. Step 5: Solve for x
    x = 204,516,673.75/16,213.98
  6. Step 6: Final answer
    x = 12,613.60

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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.