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Finding the Fourth Proportional to 12,208.92, 16,845.48 and 8,435.40

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Solution

The fourth proportional to 12,208.92, 16,845.48 and 8,435.40 is: 11,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.92 : 16,845.48 = 8,435.40 : x
  2. Step 2: Convert to fraction form
    12,208.92/16,845.48 = 8,435.40/x
  3. Step 3: Cross multiply
    12,208.92x = 16,845.48 × 8,435.40
  4. Step 4: Simplify right side
    12,208.92x = 142,098,361.99
  5. Step 5: Solve for x
    x = 142,098,361.99/12,208.92
  6. Step 6: Final answer
    x = 11,638.90

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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.