Home / 20,132.82-27,784.58-11,180.32

Finding the Fourth Proportional to 20,132.82, 27,784.58 and 11,180.32

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Solution

The fourth proportional to 20,132.82, 27,784.58 and 11,180.32 is: 15,429.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.82 : 27,784.58 = 11,180.32 : x
  2. Step 2: Convert to fraction form
    20,132.82/27,784.58 = 11,180.32/x
  3. Step 3: Cross multiply
    20,132.82x = 27,784.58 × 11,180.32
  4. Step 4: Simplify right side
    20,132.82x = 310,640,536.98
  5. Step 5: Solve for x
    x = 310,640,536.98/20,132.82
  6. Step 6: Final answer
    x = 15,429.56

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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.