Home / 20,757.07-28,650.86-11,809.57

Finding the Fourth Proportional to 20,757.07, 28,650.86 and 11,809.57

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Solution

The fourth proportional to 20,757.07, 28,650.86 and 11,809.57 is: 16,300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.07 : 28,650.86 = 11,809.57 : x
  2. Step 2: Convert to fraction form
    20,757.07/28,650.86 = 11,809.57/x
  3. Step 3: Cross multiply
    20,757.07x = 28,650.86 × 11,809.57
  4. Step 4: Simplify right side
    20,757.07x = 338,354,336.73
  5. Step 5: Solve for x
    x = 338,354,336.73/20,757.07
  6. Step 6: Final answer
    x = 16,300.68

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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.