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Finding the Fourth Proportional to 18,419.98, 27,657.69 and 11,057.41

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Solution

The fourth proportional to 18,419.98, 27,657.69 and 11,057.41 is: 16,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.98 : 27,657.69 = 11,057.41 : x
  2. Step 2: Convert to fraction form
    18,419.98/27,657.69 = 11,057.41/x
  3. Step 3: Cross multiply
    18,419.98x = 27,657.69 × 11,057.41
  4. Step 4: Simplify right side
    18,419.98x = 305,822,417.98
  5. Step 5: Solve for x
    x = 305,822,417.98/18,419.98
  6. Step 6: Final answer
    x = 16,602.76

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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.