Home / 20,141.56-30,186.78-11,381.38

Finding the Fourth Proportional to 20,141.56, 30,186.78 and 11,381.38

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Solution

The fourth proportional to 20,141.56, 30,186.78 and 11,381.38 is: 17,057.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.56 : 30,186.78 = 11,381.38 : x
  2. Step 2: Convert to fraction form
    20,141.56/30,186.78 = 11,381.38/x
  3. Step 3: Cross multiply
    20,141.56x = 30,186.78 × 11,381.38
  4. Step 4: Simplify right side
    20,141.56x = 343,567,214.16
  5. Step 5: Solve for x
    x = 343,567,214.16/20,141.56
  6. Step 6: Final answer
    x = 17,057.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.