Home / 20,374.85-30,571.02-11,021.43

Finding the Fourth Proportional to 20,374.85, 30,571.02 and 11,021.43

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Solution

The fourth proportional to 20,374.85, 30,571.02 and 11,021.43 is: 16,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.85 : 30,571.02 = 11,021.43 : x
  2. Step 2: Convert to fraction form
    20,374.85/30,571.02 = 11,021.43/x
  3. Step 3: Cross multiply
    20,374.85x = 30,571.02 × 11,021.43
  4. Step 4: Simplify right side
    20,374.85x = 336,936,356.96
  5. Step 5: Solve for x
    x = 336,936,356.96/20,374.85
  6. Step 6: Final answer
    x = 16,536.88

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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.