Home / 20,757.49-28,645.96-11,806.28

Finding the Fourth Proportional to 20,757.49, 28,645.96 and 11,806.28

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Solution

The fourth proportional to 20,757.49, 28,645.96 and 11,806.28 is: 16,293.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.49 : 28,645.96 = 11,806.28 : x
  2. Step 2: Convert to fraction form
    20,757.49/28,645.96 = 11,806.28/x
  3. Step 3: Cross multiply
    20,757.49x = 28,645.96 × 11,806.28
  4. Step 4: Simplify right side
    20,757.49x = 338,202,081.40
  5. Step 5: Solve for x
    x = 338,202,081.40/20,757.49
  6. Step 6: Final answer
    x = 16,293.02

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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.