Home / 20,056.82-27,678.33-11,103.78

Finding the Fourth Proportional to 20,056.82, 27,678.33 and 11,103.78

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Solution

The fourth proportional to 20,056.82, 27,678.33 and 11,103.78 is: 15,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,056.82 : 27,678.33 = 11,103.78 : x
  2. Step 2: Convert to fraction form
    20,056.82/27,678.33 = 11,103.78/x
  3. Step 3: Cross multiply
    20,056.82x = 27,678.33 × 11,103.78
  4. Step 4: Simplify right side
    20,056.82x = 307,334,087.09
  5. Step 5: Solve for x
    x = 307,334,087.09/20,056.82
  6. Step 6: Final answer
    x = 15,323.18

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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.