Home / 20,852.09-31,241.23-17,321.45

Finding the Fourth Proportional to 20,852.09, 31,241.23 and 17,321.45

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Solution

The fourth proportional to 20,852.09, 31,241.23 and 17,321.45 is: 25,951.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.09 : 31,241.23 = 17,321.45 : x
  2. Step 2: Convert to fraction form
    20,852.09/31,241.23 = 17,321.45/x
  3. Step 3: Cross multiply
    20,852.09x = 31,241.23 × 17,321.45
  4. Step 4: Simplify right side
    20,852.09x = 541,143,316.78
  5. Step 5: Solve for x
    x = 541,143,316.78/20,852.09
  6. Step 6: Final answer
    x = 25,951.51

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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.