Home / 20,980.26-31,467.87-11,495.34

Finding the Fourth Proportional to 20,980.26, 31,467.87 and 11,495.34

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Solution

The fourth proportional to 20,980.26, 31,467.87 and 11,495.34 is: 17,241.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.26 : 31,467.87 = 11,495.34 : x
  2. Step 2: Convert to fraction form
    20,980.26/31,467.87 = 11,495.34/x
  3. Step 3: Cross multiply
    20,980.26x = 31,467.87 × 11,495.34
  4. Step 4: Simplify right side
    20,980.26x = 361,733,864.73
  5. Step 5: Solve for x
    x = 361,733,864.73/20,980.26
  6. Step 6: Final answer
    x = 17,241.63

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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.