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Finding the Fourth Proportional to 11,997.95, 17,996.74 and 5,419.53

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Solution

The fourth proportional to 11,997.95, 17,996.74 and 5,419.53 is: 8,129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.95 : 17,996.74 = 5,419.53 : x
  2. Step 2: Convert to fraction form
    11,997.95/17,996.74 = 5,419.53/x
  3. Step 3: Cross multiply
    11,997.95x = 17,996.74 × 5,419.53
  4. Step 4: Simplify right side
    11,997.95x = 97,533,858.78
  5. Step 5: Solve for x
    x = 97,533,858.78/11,997.95
  6. Step 6: Final answer
    x = 8,129.21

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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.