Home / 20,576.72-30,830.52-12,804.56

Finding the Fourth Proportional to 20,576.72, 30,830.52 and 12,804.56

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Solution

The fourth proportional to 20,576.72, 30,830.52 and 12,804.56 is: 19,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.72 : 30,830.52 = 12,804.56 : x
  2. Step 2: Convert to fraction form
    20,576.72/30,830.52 = 12,804.56/x
  3. Step 3: Cross multiply
    20,576.72x = 30,830.52 × 12,804.56
  4. Step 4: Simplify right side
    20,576.72x = 394,771,243.17
  5. Step 5: Solve for x
    x = 394,771,243.17/20,576.72
  6. Step 6: Final answer
    x = 19,185.33

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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.