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Finding the Fourth Proportional to 18,607.20, 27,910.80 and 17,181.60

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Solution

The fourth proportional to 18,607.20, 27,910.80 and 17,181.60 is: 25,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.20 : 27,910.80 = 17,181.60 : x
  2. Step 2: Convert to fraction form
    18,607.20/27,910.80 = 17,181.60/x
  3. Step 3: Cross multiply
    18,607.20x = 27,910.80 × 17,181.60
  4. Step 4: Simplify right side
    18,607.20x = 479,552,201.28
  5. Step 5: Solve for x
    x = 479,552,201.28/18,607.20
  6. Step 6: Final answer
    x = 25,772.40

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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.