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Finding the Fourth Proportional to 11,671.60, 16,101.84 and 8,520.88

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Solution

The fourth proportional to 11,671.60, 16,101.84 and 8,520.88 is: 11,755.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,671.60 : 16,101.84 = 8,520.88 : x
  2. Step 2: Convert to fraction form
    11,671.60/16,101.84 = 8,520.88/x
  3. Step 3: Cross multiply
    11,671.60x = 16,101.84 × 8,520.88
  4. Step 4: Simplify right side
    11,671.60x = 137,201,846.42
  5. Step 5: Solve for x
    x = 137,201,846.42/11,671.60
  6. Step 6: Final answer
    x = 11,755.19

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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.