Home / 20,080.89-30,115.80-11,185.29

Finding the Fourth Proportional to 20,080.89, 30,115.80 and 11,185.29

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Solution

The fourth proportional to 20,080.89, 30,115.80 and 11,185.29 is: 16,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.89 : 30,115.80 = 11,185.29 : x
  2. Step 2: Convert to fraction form
    20,080.89/30,115.80 = 11,185.29/x
  3. Step 3: Cross multiply
    20,080.89x = 30,115.80 × 11,185.29
  4. Step 4: Simplify right side
    20,080.89x = 336,853,956.58
  5. Step 5: Solve for x
    x = 336,853,956.58/20,080.89
  6. Step 6: Final answer
    x = 16,774.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.