Home / 20,083.14-27,712.94-11,128.29

Finding the Fourth Proportional to 20,083.14, 27,712.94 and 11,128.29

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Solution

The fourth proportional to 20,083.14, 27,712.94 and 11,128.29 is: 15,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.14 : 27,712.94 = 11,128.29 : x
  2. Step 2: Convert to fraction form
    20,083.14/27,712.94 = 11,128.29/x
  3. Step 3: Cross multiply
    20,083.14x = 27,712.94 × 11,128.29
  4. Step 4: Simplify right side
    20,083.14x = 308,397,473.51
  5. Step 5: Solve for x
    x = 308,397,473.51/20,083.14
  6. Step 6: Final answer
    x = 15,356.04

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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.