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Finding the Fourth Proportional to 16,213.41, 22,372.61 and 9,139.41

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Solution

The fourth proportional to 16,213.41, 22,372.61 and 9,139.41 is: 12,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,213.41 : 22,372.61 = 9,139.41 : x
  2. Step 2: Convert to fraction form
    16,213.41/22,372.61 = 9,139.41/x
  3. Step 3: Cross multiply
    16,213.41x = 22,372.61 × 9,139.41
  4. Step 4: Simplify right side
    16,213.41x = 204,472,409.86
  5. Step 5: Solve for x
    x = 204,472,409.86/16,213.41
  6. Step 6: Final answer
    x = 12,611.31

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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.