Home / 20,132.25-27,782.87-11,180.58

Finding the Fourth Proportional to 20,132.25, 27,782.87 and 11,180.58

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Solution

The fourth proportional to 20,132.25, 27,782.87 and 11,180.58 is: 15,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.25 : 27,782.87 = 11,180.58 : x
  2. Step 2: Convert to fraction form
    20,132.25/27,782.87 = 11,180.58/x
  3. Step 3: Cross multiply
    20,132.25x = 27,782.87 × 11,180.58
  4. Step 4: Simplify right side
    20,132.25x = 310,628,691.19
  5. Step 5: Solve for x
    x = 310,628,691.19/20,132.25
  6. Step 6: Final answer
    x = 15,429.41

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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.