Home / 20,278.96-27,980.04-11,893.84

Finding the Fourth Proportional to 20,278.96, 27,980.04 and 11,893.84

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Solution

The fourth proportional to 20,278.96, 27,980.04 and 11,893.84 is: 16,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.96 : 27,980.04 = 11,893.84 : x
  2. Step 2: Convert to fraction form
    20,278.96/27,980.04 = 11,893.84/x
  3. Step 3: Cross multiply
    20,278.96x = 27,980.04 × 11,893.84
  4. Step 4: Simplify right side
    20,278.96x = 332,790,118.95
  5. Step 5: Solve for x
    x = 332,790,118.95/20,278.96
  6. Step 6: Final answer
    x = 16,410.61

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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.