Home / 20,213.60-30,320.40-7,067.30

Finding the Fourth Proportional to 20,213.60, 30,320.40 and 7,067.30

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Solution

The fourth proportional to 20,213.60, 30,320.40 and 7,067.30 is: 10,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.60 : 30,320.40 = 7,067.30 : x
  2. Step 2: Convert to fraction form
    20,213.60/30,320.40 = 7,067.30/x
  3. Step 3: Cross multiply
    20,213.60x = 30,320.40 × 7,067.30
  4. Step 4: Simplify right side
    20,213.60x = 214,283,362.92
  5. Step 5: Solve for x
    x = 214,283,362.92/20,213.60
  6. Step 6: Final answer
    x = 10,600.95

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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.