Home / 20,080.60-30,185.70-18,525.40

Finding the Fourth Proportional to 20,080.60, 30,185.70 and 18,525.40

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Solution

The fourth proportional to 20,080.60, 30,185.70 and 18,525.40 is: 27,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.60 : 30,185.70 = 18,525.40 : x
  2. Step 2: Convert to fraction form
    20,080.60/30,185.70 = 18,525.40/x
  3. Step 3: Cross multiply
    20,080.60x = 30,185.70 × 18,525.40
  4. Step 4: Simplify right side
    20,080.60x = 559,202,166.78
  5. Step 5: Solve for x
    x = 559,202,166.78/20,080.60
  6. Step 6: Final answer
    x = 27,847.88

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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.