Home / 20,779.97-31,310.23-17,163.22

Finding the Fourth Proportional to 20,779.97, 31,310.23 and 17,163.22

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Solution

The fourth proportional to 20,779.97, 31,310.23 and 17,163.22 is: 25,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.97 : 31,310.23 = 17,163.22 : x
  2. Step 2: Convert to fraction form
    20,779.97/31,310.23 = 17,163.22/x
  3. Step 3: Cross multiply
    20,779.97x = 31,310.23 × 17,163.22
  4. Step 4: Simplify right side
    20,779.97x = 537,384,365.74
  5. Step 5: Solve for x
    x = 537,384,365.74/20,779.97
  6. Step 6: Final answer
    x = 25,860.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.