Home / 20,142.06-27,795.42-11,189.33

Finding the Fourth Proportional to 20,142.06, 27,795.42 and 11,189.33

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Solution

The fourth proportional to 20,142.06, 27,795.42 and 11,189.33 is: 15,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.06 : 27,795.42 = 11,189.33 : x
  2. Step 2: Convert to fraction form
    20,142.06/27,795.42 = 11,189.33/x
  3. Step 3: Cross multiply
    20,142.06x = 27,795.42 × 11,189.33
  4. Step 4: Simplify right side
    20,142.06x = 311,012,126.87
  5. Step 5: Solve for x
    x = 311,012,126.87/20,142.06
  6. Step 6: Final answer
    x = 15,440.93

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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.