Home / 20,092.78-27,728.73-12,133.42

Finding the Fourth Proportional to 20,092.78, 27,728.73 and 12,133.42

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Solution

The fourth proportional to 20,092.78, 27,728.73 and 12,133.42 is: 16,744.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092.78 : 27,728.73 = 12,133.42 : x
  2. Step 2: Convert to fraction form
    20,092.78/27,728.73 = 12,133.42/x
  3. Step 3: Cross multiply
    20,092.78x = 27,728.73 × 12,133.42
  4. Step 4: Simplify right side
    20,092.78x = 336,444,327.16
  5. Step 5: Solve for x
    x = 336,444,327.16/20,092.78
  6. Step 6: Final answer
    x = 16,744.54

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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.