Home / 20,779.41-31,309.38-17,162.66

Finding the Fourth Proportional to 20,779.41, 31,309.38 and 17,162.66

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Solution

The fourth proportional to 20,779.41, 31,309.38 and 17,162.66 is: 25,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.41 : 31,309.38 = 17,162.66 : x
  2. Step 2: Convert to fraction form
    20,779.41/31,309.38 = 17,162.66/x
  3. Step 3: Cross multiply
    20,779.41x = 31,309.38 × 17,162.66
  4. Step 4: Simplify right side
    20,779.41x = 537,352,087.20
  5. Step 5: Solve for x
    x = 537,352,087.20/20,779.41
  6. Step 6: Final answer
    x = 25,859.83

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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.