Home / 20,028.36-27,634.86-11,640.36

Finding the Fourth Proportional to 20,028.36, 27,634.86 and 11,640.36

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Solution

The fourth proportional to 20,028.36, 27,634.86 and 11,640.36 is: 16,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.36 : 27,634.86 = 11,640.36 : x
  2. Step 2: Convert to fraction form
    20,028.36/27,634.86 = 11,640.36/x
  3. Step 3: Cross multiply
    20,028.36x = 27,634.86 × 11,640.36
  4. Step 4: Simplify right side
    20,028.36x = 321,679,718.95
  5. Step 5: Solve for x
    x = 321,679,718.95/20,028.36
  6. Step 6: Final answer
    x = 16,061.21

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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.