Home / 20,515.05-30,772.72-7,367.54

Finding the Fourth Proportional to 20,515.05, 30,772.72 and 7,367.54

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Solution

The fourth proportional to 20,515.05, 30,772.72 and 7,367.54 is: 11,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.05 : 30,772.72 = 7,367.54 : x
  2. Step 2: Convert to fraction form
    20,515.05/30,772.72 = 7,367.54/x
  3. Step 3: Cross multiply
    20,515.05x = 30,772.72 × 7,367.54
  4. Step 4: Simplify right side
    20,515.05x = 226,719,131.74
  5. Step 5: Solve for x
    x = 226,719,131.74/20,515.05
  6. Step 6: Final answer
    x = 11,051.36

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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.