Home / 20,135.77-27,788.29-11,183.31

Finding the Fourth Proportional to 20,135.77, 27,788.29 and 11,183.31

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Solution

The fourth proportional to 20,135.77, 27,788.29 and 11,183.31 is: 15,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.77 : 27,788.29 = 11,183.31 : x
  2. Step 2: Convert to fraction form
    20,135.77/27,788.29 = 11,183.31/x
  3. Step 3: Cross multiply
    20,135.77x = 27,788.29 × 11,183.31
  4. Step 4: Simplify right side
    20,135.77x = 310,765,033.48
  5. Step 5: Solve for x
    x = 310,765,033.48/20,135.77
  6. Step 6: Final answer
    x = 15,433.48

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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.