Home / 20,736.80-31,080.90-15,536.60

Finding the Fourth Proportional to 20,736.80, 31,080.90 and 15,536.60

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Solution

The fourth proportional to 20,736.80, 31,080.90 and 15,536.60 is: 23,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.80 : 31,080.90 = 15,536.60 : x
  2. Step 2: Convert to fraction form
    20,736.80/31,080.90 = 15,536.60/x
  3. Step 3: Cross multiply
    20,736.80x = 31,080.90 × 15,536.60
  4. Step 4: Simplify right side
    20,736.80x = 482,891,510.94
  5. Step 5: Solve for x
    x = 482,891,510.94/20,736.80
  6. Step 6: Final answer
    x = 23,286.69

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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.