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Finding the Fourth Proportional to 12,963.66, 17,883.63 and 8,485.44

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Solution

The fourth proportional to 12,963.66, 17,883.63 and 8,485.44 is: 11,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.66 : 17,883.63 = 8,485.44 : x
  2. Step 2: Convert to fraction form
    12,963.66/17,883.63 = 8,485.44/x
  3. Step 3: Cross multiply
    12,963.66x = 17,883.63 × 8,485.44
  4. Step 4: Simplify right side
    12,963.66x = 151,750,469.35
  5. Step 5: Solve for x
    x = 151,750,469.35/12,963.66
  6. Step 6: Final answer
    x = 11,705.84

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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.