Home / 20,221.55-30,338.24-10,367.69

Finding the Fourth Proportional to 20,221.55, 30,338.24 and 10,367.69

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Solution

The fourth proportional to 20,221.55, 30,338.24 and 10,367.69 is: 15,554.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.55 : 30,338.24 = 10,367.69 : x
  2. Step 2: Convert to fraction form
    20,221.55/30,338.24 = 10,367.69/x
  3. Step 3: Cross multiply
    20,221.55x = 30,338.24 × 10,367.69
  4. Step 4: Simplify right side
    20,221.55x = 314,537,467.47
  5. Step 5: Solve for x
    x = 314,537,467.47/20,221.55
  6. Step 6: Final answer
    x = 15,554.57

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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.