Home / 20,563.10-30,909.45-19,007.90

Finding the Fourth Proportional to 20,563.10, 30,909.45 and 19,007.90

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Solution

The fourth proportional to 20,563.10, 30,909.45 and 19,007.90 is: 28,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.10 : 30,909.45 = 19,007.90 : x
  2. Step 2: Convert to fraction form
    20,563.10/30,909.45 = 19,007.90/x
  3. Step 3: Cross multiply
    20,563.10x = 30,909.45 × 19,007.90
  4. Step 4: Simplify right side
    20,563.10x = 587,523,734.66
  5. Step 5: Solve for x
    x = 587,523,734.66/20,563.10
  6. Step 6: Final answer
    x = 28,571.75

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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.