Home / 21,893.76-30,190.32-20,118.24

Finding the Fourth Proportional to 21,893.76, 30,190.32 and 20,118.24

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Solution

The fourth proportional to 21,893.76, 30,190.32 and 20,118.24 is: 27,741.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.76 : 30,190.32 = 20,118.24 : x
  2. Step 2: Convert to fraction form
    21,893.76/30,190.32 = 20,118.24/x
  3. Step 3: Cross multiply
    21,893.76x = 30,190.32 × 20,118.24
  4. Step 4: Simplify right side
    21,893.76x = 607,376,103.44
  5. Step 5: Solve for x
    x = 607,376,103.44/21,893.76
  6. Step 6: Final answer
    x = 27,741.97

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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.