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Finding the Fourth Proportional to 18,112.98, 27,129.33 and 13,922.13

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Solution

The fourth proportional to 18,112.98, 27,129.33 and 13,922.13 is: 20,852.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.98 : 27,129.33 = 13,922.13 : x
  2. Step 2: Convert to fraction form
    18,112.98/27,129.33 = 13,922.13/x
  3. Step 3: Cross multiply
    18,112.98x = 27,129.33 × 13,922.13
  4. Step 4: Simplify right side
    18,112.98x = 377,698,059.07
  5. Step 5: Solve for x
    x = 377,698,059.07/18,112.98
  6. Step 6: Final answer
    x = 20,852.34

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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.