Home / 20,212.26-30,320.82-19,106.34

Finding the Fourth Proportional to 20,212.26, 30,320.82 and 19,106.34

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Solution

The fourth proportional to 20,212.26, 30,320.82 and 19,106.34 is: 28,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.26 : 30,320.82 = 19,106.34 : x
  2. Step 2: Convert to fraction form
    20,212.26/30,320.82 = 19,106.34/x
  3. Step 3: Cross multiply
    20,212.26x = 30,320.82 × 19,106.34
  4. Step 4: Simplify right side
    20,212.26x = 579,319,896.00
  5. Step 5: Solve for x
    x = 579,319,896.00/20,212.26
  6. Step 6: Final answer
    x = 28,661.81

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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.