Home / 20,153.69-27,812.77-11,201.57

Finding the Fourth Proportional to 20,153.69, 27,812.77 and 11,201.57

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Solution

The fourth proportional to 20,153.69, 27,812.77 and 11,201.57 is: 15,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.69 : 27,812.77 = 11,201.57 : x
  2. Step 2: Convert to fraction form
    20,153.69/27,812.77 = 11,201.57/x
  3. Step 3: Cross multiply
    20,153.69x = 27,812.77 × 11,201.57
  4. Step 4: Simplify right side
    20,153.69x = 311,546,690.05
  5. Step 5: Solve for x
    x = 311,546,690.05/20,153.69
  6. Step 6: Final answer
    x = 15,458.54

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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.