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Finding the Fourth Proportional to 13,652.64, 18,843.60 and 8,064.48

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Solution

The fourth proportional to 13,652.64, 18,843.60 and 8,064.48 is: 11,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652.64 : 18,843.60 = 8,064.48 : x
  2. Step 2: Convert to fraction form
    13,652.64/18,843.60 = 8,064.48/x
  3. Step 3: Cross multiply
    13,652.64x = 18,843.60 × 8,064.48
  4. Step 4: Simplify right side
    13,652.64x = 151,963,835.33
  5. Step 5: Solve for x
    x = 151,963,835.33/13,652.64
  6. Step 6: Final answer
    x = 11,130.73

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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.