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Finding the Fourth Proportional to 33,093.68, 45,650.94 and 20,971.90

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Solution

The fourth proportional to 33,093.68, 45,650.94 and 20,971.90 is: 28,929.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,093.68 : 45,650.94 = 20,971.90 : x
  2. Step 2: Convert to fraction form
    33,093.68/45,650.94 = 20,971.90/x
  3. Step 3: Cross multiply
    33,093.68x = 45,650.94 × 20,971.90
  4. Step 4: Simplify right side
    33,093.68x = 957,386,720.33
  5. Step 5: Solve for x
    x = 957,386,720.33/33,093.68
  6. Step 6: Final answer
    x = 28,929.59

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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.