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Finding the Fourth Proportional to 12,755.67, 19,112.74 and 10,108.89

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Solution

The fourth proportional to 12,755.67, 19,112.74 and 10,108.89 is: 15,146.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.67 : 19,112.74 = 10,108.89 : x
  2. Step 2: Convert to fraction form
    12,755.67/19,112.74 = 10,108.89/x
  3. Step 3: Cross multiply
    12,755.67x = 19,112.74 × 10,108.89
  4. Step 4: Simplify right side
    12,755.67x = 193,208,586.26
  5. Step 5: Solve for x
    x = 193,208,586.26/12,755.67
  6. Step 6: Final answer
    x = 15,146.88

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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.