Home / 20,757.82-28,645.90-11,326.59

Finding the Fourth Proportional to 20,757.82, 28,645.90 and 11,326.59

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Solution

The fourth proportional to 20,757.82, 28,645.90 and 11,326.59 is: 15,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.82 : 28,645.90 = 11,326.59 : x
  2. Step 2: Convert to fraction form
    20,757.82/28,645.90 = 11,326.59/x
  3. Step 3: Cross multiply
    20,757.82x = 28,645.90 × 11,326.59
  4. Step 4: Simplify right side
    20,757.82x = 324,460,288.71
  5. Step 5: Solve for x
    x = 324,460,288.71/20,757.82
  6. Step 6: Final answer
    x = 15,630.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.