Home / 20,757.43-28,645.37-11,326.20

Finding the Fourth Proportional to 20,757.43, 28,645.37 and 11,326.20

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Solution

The fourth proportional to 20,757.43, 28,645.37 and 11,326.20 is: 15,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.43 : 28,645.37 = 11,326.20 : x
  2. Step 2: Convert to fraction form
    20,757.43/28,645.37 = 11,326.20/x
  3. Step 3: Cross multiply
    20,757.43x = 28,645.37 × 11,326.20
  4. Step 4: Simplify right side
    20,757.43x = 324,443,189.69
  5. Step 5: Solve for x
    x = 324,443,189.69/20,757.43
  6. Step 6: Final answer
    x = 15,630.22

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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.