Home / 20,348.29-30,467.75-12,912.49

Finding the Fourth Proportional to 20,348.29, 30,467.75 and 12,912.49

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Solution

The fourth proportional to 20,348.29, 30,467.75 and 12,912.49 is: 19,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.29 : 30,467.75 = 12,912.49 : x
  2. Step 2: Convert to fraction form
    20,348.29/30,467.75 = 12,912.49/x
  3. Step 3: Cross multiply
    20,348.29x = 30,467.75 × 12,912.49
  4. Step 4: Simplify right side
    20,348.29x = 393,414,452.64
  5. Step 5: Solve for x
    x = 393,414,452.64/20,348.29
  6. Step 6: Final answer
    x = 19,334.03

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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.