Home / 20,467.73-28,245.21-11,515.30

Finding the Fourth Proportional to 20,467.73, 28,245.21 and 11,515.30

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Solution

The fourth proportional to 20,467.73, 28,245.21 and 11,515.30 is: 15,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.73 : 28,245.21 = 11,515.30 : x
  2. Step 2: Convert to fraction form
    20,467.73/28,245.21 = 11,515.30/x
  3. Step 3: Cross multiply
    20,467.73x = 28,245.21 × 11,515.30
  4. Step 4: Simplify right side
    20,467.73x = 325,252,066.71
  5. Step 5: Solve for x
    x = 325,252,066.71/20,467.73
  6. Step 6: Final answer
    x = 15,890.97

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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.