Home / 20,112.07-27,755.39-12,152.75

Finding the Fourth Proportional to 20,112.07, 27,755.39 and 12,152.75

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Solution

The fourth proportional to 20,112.07, 27,755.39 and 12,152.75 is: 16,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.07 : 27,755.39 = 12,152.75 : x
  2. Step 2: Convert to fraction form
    20,112.07/27,755.39 = 12,152.75/x
  3. Step 3: Cross multiply
    20,112.07x = 27,755.39 × 12,152.75
  4. Step 4: Simplify right side
    20,112.07x = 337,304,415.59
  5. Step 5: Solve for x
    x = 337,304,415.59/20,112.07
  6. Step 6: Final answer
    x = 16,771.25

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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.