Home / 21,086.44-31,620.37-11,223.37

Finding the Fourth Proportional to 21,086.44, 31,620.37 and 11,223.37

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Solution

The fourth proportional to 21,086.44, 31,620.37 and 11,223.37 is: 16,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.44 : 31,620.37 = 11,223.37 : x
  2. Step 2: Convert to fraction form
    21,086.44/31,620.37 = 11,223.37/x
  3. Step 3: Cross multiply
    21,086.44x = 31,620.37 × 11,223.37
  4. Step 4: Simplify right side
    21,086.44x = 354,887,112.05
  5. Step 5: Solve for x
    x = 354,887,112.05/21,086.44
  6. Step 6: Final answer
    x = 16,830.11

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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.