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Finding the Fourth Proportional to 12,505.95, 18,738.09 and 8,800.39

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Solution

The fourth proportional to 12,505.95, 18,738.09 and 8,800.39 is: 13,185.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.95 : 18,738.09 = 8,800.39 : x
  2. Step 2: Convert to fraction form
    12,505.95/18,738.09 = 8,800.39/x
  3. Step 3: Cross multiply
    12,505.95x = 18,738.09 × 8,800.39
  4. Step 4: Simplify right side
    12,505.95x = 164,902,453.01
  5. Step 5: Solve for x
    x = 164,902,453.01/12,505.95
  6. Step 6: Final answer
    x = 13,185.92

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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.