Home / 20,981.26-31,469.37-11,496.34

Finding the Fourth Proportional to 20,981.26, 31,469.37 and 11,496.34

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Solution

The fourth proportional to 20,981.26, 31,469.37 and 11,496.34 is: 17,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.26 : 31,469.37 = 11,496.34 : x
  2. Step 2: Convert to fraction form
    20,981.26/31,469.37 = 11,496.34/x
  3. Step 3: Cross multiply
    20,981.26x = 31,469.37 × 11,496.34
  4. Step 4: Simplify right side
    20,981.26x = 361,782,577.11
  5. Step 5: Solve for x
    x = 361,782,577.11/20,981.26
  6. Step 6: Final answer
    x = 17,243.13

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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.