Home / 19,721.80-29,604.30-12,334.60

Finding the Fourth Proportional to 19,721.80, 29,604.30 and 12,334.60

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Solution

The fourth proportional to 19,721.80, 29,604.30 and 12,334.60 is: 18,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.80 : 29,604.30 = 12,334.60 : x
  2. Step 2: Convert to fraction form
    19,721.80/29,604.30 = 12,334.60/x
  3. Step 3: Cross multiply
    19,721.80x = 29,604.30 × 12,334.60
  4. Step 4: Simplify right side
    19,721.80x = 365,157,198.78
  5. Step 5: Solve for x
    x = 365,157,198.78/19,721.80
  6. Step 6: Final answer
    x = 18,515.41

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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.