Home / 13,219.26-19,820.97-4,209.48

Finding the Fourth Proportional to 13,219.26, 19,820.97 and 4,209.48

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Solution

The fourth proportional to 13,219.26, 19,820.97 and 4,209.48 is: 6,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.26 : 19,820.97 = 4,209.48 : x
  2. Step 2: Convert to fraction form
    13,219.26/19,820.97 = 4,209.48/x
  3. Step 3: Cross multiply
    13,219.26x = 19,820.97 × 4,209.48
  4. Step 4: Simplify right side
    13,219.26x = 83,435,976.80
  5. Step 5: Solve for x
    x = 83,435,976.80/13,219.26
  6. Step 6: Final answer
    x = 6,311.70

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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.