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Finding the Fourth Proportional to 19,611.68, 27,066.48 and 11,228

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Solution

The fourth proportional to 19,611.68, 27,066.48 and 11,228 is: 15,495.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.68 : 27,066.48 = 11,228 : x
  2. Step 2: Convert to fraction form
    19,611.68/27,066.48 = 11,228/x
  3. Step 3: Cross multiply
    19,611.68x = 27,066.48 × 11,228
  4. Step 4: Simplify right side
    19,611.68x = 303,902,437.44
  5. Step 5: Solve for x
    x = 303,902,437.44/19,611.68
  6. Step 6: Final answer
    x = 15,495.99

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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.