Home / 20,100.69-27,738.99-12,141.45

Finding the Fourth Proportional to 20,100.69, 27,738.99 and 12,141.45

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Solution

The fourth proportional to 20,100.69, 27,738.99 and 12,141.45 is: 16,755.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.69 : 27,738.99 = 12,141.45 : x
  2. Step 2: Convert to fraction form
    20,100.69/27,738.99 = 12,141.45/x
  3. Step 3: Cross multiply
    20,100.69x = 27,738.99 × 12,141.45
  4. Step 4: Simplify right side
    20,100.69x = 336,791,560.14
  5. Step 5: Solve for x
    x = 336,791,560.14/20,100.69
  6. Step 6: Final answer
    x = 16,755.22

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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.