Home / 20,281.54-27,986.60-11,896.42

Finding the Fourth Proportional to 20,281.54, 27,986.60 and 11,896.42

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Solution

The fourth proportional to 20,281.54, 27,986.60 and 11,896.42 is: 16,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.54 : 27,986.60 = 11,896.42 : x
  2. Step 2: Convert to fraction form
    20,281.54/27,986.60 = 11,896.42/x
  3. Step 3: Cross multiply
    20,281.54x = 27,986.60 × 11,896.42
  4. Step 4: Simplify right side
    20,281.54x = 332,940,347.97
  5. Step 5: Solve for x
    x = 332,940,347.97/20,281.54
  6. Step 6: Final answer
    x = 16,415.93

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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.