Home / 30,127.36-41,609.84-20,550.92

Finding the Fourth Proportional to 30,127.36, 41,609.84 and 20,550.92

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Solution

The fourth proportional to 30,127.36, 41,609.84 and 20,550.92 is: 28,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,127.36 : 41,609.84 = 20,550.92 : x
  2. Step 2: Convert to fraction form
    30,127.36/41,609.84 = 20,550.92/x
  3. Step 3: Cross multiply
    30,127.36x = 41,609.84 × 20,550.92
  4. Step 4: Simplify right side
    30,127.36x = 855,120,493.05
  5. Step 5: Solve for x
    x = 855,120,493.05/30,127.36
  6. Step 6: Final answer
    x = 28,383.52

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Half scale
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Double scale
Find fourth proportional to 30,128.36, 41,611.22 and 20,551.92
Similar ratio
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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.