Home / 19,845.94-27,388.62-13,119.90

Finding the Fourth Proportional to 19,845.94, 27,388.62 and 13,119.90

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Solution

The fourth proportional to 19,845.94, 27,388.62 and 13,119.90 is: 18,106.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.94 : 27,388.62 = 13,119.90 : x
  2. Step 2: Convert to fraction form
    19,845.94/27,388.62 = 13,119.90/x
  3. Step 3: Cross multiply
    19,845.94x = 27,388.62 × 13,119.90
  4. Step 4: Simplify right side
    19,845.94x = 359,335,955.54
  5. Step 5: Solve for x
    x = 359,335,955.54/19,845.94
  6. Step 6: Final answer
    x = 18,106.27

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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.