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Finding the Fourth Proportional to 18,236.60, 25,172.70 and 11,343.16

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Solution

The fourth proportional to 18,236.60, 25,172.70 and 11,343.16 is: 15,657.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.60 : 25,172.70 = 11,343.16 : x
  2. Step 2: Convert to fraction form
    18,236.60/25,172.70 = 11,343.16/x
  3. Step 3: Cross multiply
    18,236.60x = 25,172.70 × 11,343.16
  4. Step 4: Simplify right side
    18,236.60x = 285,537,963.73
  5. Step 5: Solve for x
    x = 285,537,963.73/18,236.60
  6. Step 6: Final answer
    x = 15,657.41

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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.