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Finding the Fourth Proportional to 18,201.65, 25,126.02 and 12,236.78

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Solution

The fourth proportional to 18,201.65, 25,126.02 and 12,236.78 is: 16,891.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,201.65 : 25,126.02 = 12,236.78 : x
  2. Step 2: Convert to fraction form
    18,201.65/25,126.02 = 12,236.78/x
  3. Step 3: Cross multiply
    18,201.65x = 25,126.02 × 12,236.78
  4. Step 4: Simplify right side
    18,201.65x = 307,461,453.39
  5. Step 5: Solve for x
    x = 307,461,453.39/18,201.65
  6. Step 6: Final answer
    x = 16,891.96

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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.