Home / 20,076.13-27,705.77-12,116.80

Finding the Fourth Proportional to 20,076.13, 27,705.77 and 12,116.80

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Solution

The fourth proportional to 20,076.13, 27,705.77 and 12,116.80 is: 16,721.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.13 : 27,705.77 = 12,116.80 : x
  2. Step 2: Convert to fraction form
    20,076.13/27,705.77 = 12,116.80/x
  3. Step 3: Cross multiply
    20,076.13x = 27,705.77 × 12,116.80
  4. Step 4: Simplify right side
    20,076.13x = 335,705,273.94
  5. Step 5: Solve for x
    x = 335,705,273.94/20,076.13
  6. Step 6: Final answer
    x = 16,721.61

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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.