Home / 20,736.82-31,093.69-12,306.75

Finding the Fourth Proportional to 20,736.82, 31,093.69 and 12,306.75

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Solution

The fourth proportional to 20,736.82, 31,093.69 and 12,306.75 is: 18,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.82 : 31,093.69 = 12,306.75 : x
  2. Step 2: Convert to fraction form
    20,736.82/31,093.69 = 12,306.75/x
  3. Step 3: Cross multiply
    20,736.82x = 31,093.69 × 12,306.75
  4. Step 4: Simplify right side
    20,736.82x = 382,662,269.41
  5. Step 5: Solve for x
    x = 382,662,269.41/20,736.82
  6. Step 6: Final answer
    x = 18,453.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.