Home / 20,067.40-30,119.60-10,213.75

Finding the Fourth Proportional to 20,067.40, 30,119.60 and 10,213.75

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Solution

The fourth proportional to 20,067.40, 30,119.60 and 10,213.75 is: 15,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.40 : 30,119.60 = 10,213.75 : x
  2. Step 2: Convert to fraction form
    20,067.40/30,119.60 = 10,213.75/x
  3. Step 3: Cross multiply
    20,067.40x = 30,119.60 × 10,213.75
  4. Step 4: Simplify right side
    20,067.40x = 307,634,064.50
  5. Step 5: Solve for x
    x = 307,634,064.50/20,067.40
  6. Step 6: Final answer
    x = 15,330.04

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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.