Home / 20,467.58-28,245.03-11,515.10

Finding the Fourth Proportional to 20,467.58, 28,245.03 and 11,515.10

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Solution

The fourth proportional to 20,467.58, 28,245.03 and 11,515.10 is: 15,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.58 : 28,245.03 = 11,515.10 : x
  2. Step 2: Convert to fraction form
    20,467.58/28,245.03 = 11,515.10/x
  3. Step 3: Cross multiply
    20,467.58x = 28,245.03 × 11,515.10
  4. Step 4: Simplify right side
    20,467.58x = 325,244,344.95
  5. Step 5: Solve for x
    x = 325,244,344.95/20,467.58
  6. Step 6: Final answer
    x = 15,890.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.