Home / 20,141.35-27,795.09-11,188.60

Finding the Fourth Proportional to 20,141.35, 27,795.09 and 11,188.60

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Solution

The fourth proportional to 20,141.35, 27,795.09 and 11,188.60 is: 15,440.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.35 : 27,795.09 = 11,188.60 : x
  2. Step 2: Convert to fraction form
    20,141.35/27,795.09 = 11,188.60/x
  3. Step 3: Cross multiply
    20,141.35x = 27,795.09 × 11,188.60
  4. Step 4: Simplify right side
    20,141.35x = 310,988,143.97
  5. Step 5: Solve for x
    x = 310,988,143.97/20,141.35
  6. Step 6: Final answer
    x = 15,440.28

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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.