Home / 20,085.75-27,717.57-11,133.39

Finding the Fourth Proportional to 20,085.75, 27,717.57 and 11,133.39

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Solution

The fourth proportional to 20,085.75, 27,717.57 and 11,133.39 is: 15,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.75 : 27,717.57 = 11,133.39 : x
  2. Step 2: Convert to fraction form
    20,085.75/27,717.57 = 11,133.39/x
  3. Step 3: Cross multiply
    20,085.75x = 27,717.57 × 11,133.39
  4. Step 4: Simplify right side
    20,085.75x = 308,590,516.66
  5. Step 5: Solve for x
    x = 308,590,516.66/20,085.75
  6. Step 6: Final answer
    x = 15,363.65

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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.