Home / 20,759.09-28,652.15-13,203.95

Finding the Fourth Proportional to 20,759.09, 28,652.15 and 13,203.95

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Solution

The fourth proportional to 20,759.09, 28,652.15 and 13,203.95 is: 18,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.09 : 28,652.15 = 13,203.95 : x
  2. Step 2: Convert to fraction form
    20,759.09/28,652.15 = 13,203.95/x
  3. Step 3: Cross multiply
    20,759.09x = 28,652.15 × 13,203.95
  4. Step 4: Simplify right side
    20,759.09x = 378,321,489.97
  5. Step 5: Solve for x
    x = 378,321,489.97/20,759.09
  6. Step 6: Final answer
    x = 18,224.38

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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.