Home / 20,783.82-28,680.30-11,832.24

Finding the Fourth Proportional to 20,783.82, 28,680.30 and 11,832.24

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Solution

The fourth proportional to 20,783.82, 28,680.30 and 11,832.24 is: 16,327.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.82 : 28,680.30 = 11,832.24 : x
  2. Step 2: Convert to fraction form
    20,783.82/28,680.30 = 11,832.24/x
  3. Step 3: Cross multiply
    20,783.82x = 28,680.30 × 11,832.24
  4. Step 4: Simplify right side
    20,783.82x = 339,352,192.87
  5. Step 5: Solve for x
    x = 339,352,192.87/20,783.82
  6. Step 6: Final answer
    x = 16,327.71

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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.