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Finding the Fourth Proportional to 19,998.78, 27,596.97 and 11,046.30

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Solution

The fourth proportional to 19,998.78, 27,596.97 and 11,046.30 is: 15,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.78 : 27,596.97 = 11,046.30 : x
  2. Step 2: Convert to fraction form
    19,998.78/27,596.97 = 11,046.30/x
  3. Step 3: Cross multiply
    19,998.78x = 27,596.97 × 11,046.30
  4. Step 4: Simplify right side
    19,998.78x = 304,844,409.71
  5. Step 5: Solve for x
    x = 304,844,409.71/19,998.78
  6. Step 6: Final answer
    x = 15,243.15

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1.5x scale

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.