Home / 20,375.40-30,556.20-7,225.88

Finding the Fourth Proportional to 20,375.40, 30,556.20 and 7,225.88

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Solution

The fourth proportional to 20,375.40, 30,556.20 and 7,225.88 is: 10,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.40 : 30,556.20 = 7,225.88 : x
  2. Step 2: Convert to fraction form
    20,375.40/30,556.20 = 7,225.88/x
  3. Step 3: Cross multiply
    20,375.40x = 30,556.20 × 7,225.88
  4. Step 4: Simplify right side
    20,375.40x = 220,795,434.46
  5. Step 5: Solve for x
    x = 220,795,434.46/20,375.40
  6. Step 6: Final answer
    x = 10,836.37

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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.