Home / 20,674.05-31,021.25-8,202.98

Finding the Fourth Proportional to 20,674.05, 31,021.25 and 8,202.98

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Solution

The fourth proportional to 20,674.05, 31,021.25 and 8,202.98 is: 12,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.05 : 31,021.25 = 8,202.98 : x
  2. Step 2: Convert to fraction form
    20,674.05/31,021.25 = 8,202.98/x
  3. Step 3: Cross multiply
    20,674.05x = 31,021.25 × 8,202.98
  4. Step 4: Simplify right side
    20,674.05x = 254,466,497.20
  5. Step 5: Solve for x
    x = 254,466,497.20/20,674.05
  6. Step 6: Final answer
    x = 12,308.50

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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.