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Finding the Fourth Proportional to 18,236.63, 25,163.78 and 10,278.72

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Solution

The fourth proportional to 18,236.63, 25,163.78 and 10,278.72 is: 14,183.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.63 : 25,163.78 = 10,278.72 : x
  2. Step 2: Convert to fraction form
    18,236.63/25,163.78 = 10,278.72/x
  3. Step 3: Cross multiply
    18,236.63x = 25,163.78 × 10,278.72
  4. Step 4: Simplify right side
    18,236.63x = 258,651,397.37
  5. Step 5: Solve for x
    x = 258,651,397.37/18,236.63
  6. Step 6: Final answer
    x = 14,183.07

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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.