Home / 28,805.19-39,789.33-22,173.12

Finding the Fourth Proportional to 28,805.19, 39,789.33 and 22,173.12

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Solution

The fourth proportional to 28,805.19, 39,789.33 and 22,173.12 is: 30,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805.19 : 39,789.33 = 22,173.12 : x
  2. Step 2: Convert to fraction form
    28,805.19/39,789.33 = 22,173.12/x
  3. Step 3: Cross multiply
    28,805.19x = 39,789.33 × 22,173.12
  4. Step 4: Simplify right side
    28,805.19x = 882,253,588.81
  5. Step 5: Solve for x
    x = 882,253,588.81/28,805.19
  6. Step 6: Final answer
    x = 30,628.29

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Double scale
Find fourth proportional to 28,806.19, 39,790.71 and 22,174.12
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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.