Home / 21,076.44-31,605.30-11,213.64

Finding the Fourth Proportional to 21,076.44, 31,605.30 and 11,213.64

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Solution

The fourth proportional to 21,076.44, 31,605.30 and 11,213.64 is: 16,815.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.44 : 31,605.30 = 11,213.64 : x
  2. Step 2: Convert to fraction form
    21,076.44/31,605.30 = 11,213.64/x
  3. Step 3: Cross multiply
    21,076.44x = 31,605.30 × 11,213.64
  4. Step 4: Simplify right side
    21,076.44x = 354,410,456.29
  5. Step 5: Solve for x
    x = 354,410,456.29/21,076.44
  6. Step 6: Final answer
    x = 16,815.48

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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.