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Finding the Fourth Proportional to 18,172.20, 27,258.30 and 17,200.20

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Solution

The fourth proportional to 18,172.20, 27,258.30 and 17,200.20 is: 25,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.20 : 27,258.30 = 17,200.20 : x
  2. Step 2: Convert to fraction form
    18,172.20/27,258.30 = 17,200.20/x
  3. Step 3: Cross multiply
    18,172.20x = 27,258.30 × 17,200.20
  4. Step 4: Simplify right side
    18,172.20x = 468,848,211.66
  5. Step 5: Solve for x
    x = 468,848,211.66/18,172.20
  6. Step 6: Final answer
    x = 25,800.30

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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.