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Finding the Fourth Proportional to 18,508.64, 27,772.08 and 8,648.60

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Solution

The fourth proportional to 18,508.64, 27,772.08 and 8,648.60 is: 12,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.64 : 27,772.08 = 8,648.60 : x
  2. Step 2: Convert to fraction form
    18,508.64/27,772.08 = 8,648.60/x
  3. Step 3: Cross multiply
    18,508.64x = 27,772.08 × 8,648.60
  4. Step 4: Simplify right side
    18,508.64x = 240,189,611.09
  5. Step 5: Solve for x
    x = 240,189,611.09/18,508.64
  6. Step 6: Final answer
    x = 12,977.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.