Home / 13,212.20-19,819.20-4,205.60

Finding the Fourth Proportional to 13,212.20, 19,819.20 and 4,205.60

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Solution

The fourth proportional to 13,212.20, 19,819.20 and 4,205.60 is: 6,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.20 : 19,819.20 = 4,205.60 : x
  2. Step 2: Convert to fraction form
    13,212.20/19,819.20 = 4,205.60/x
  3. Step 3: Cross multiply
    13,212.20x = 19,819.20 × 4,205.60
  4. Step 4: Simplify right side
    13,212.20x = 83,351,627.52
  5. Step 5: Solve for x
    x = 83,351,627.52/13,212.20
  6. Step 6: Final answer
    x = 6,308.69

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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.