Home / 20,264.40-30,387.48-8,571.60

Finding the Fourth Proportional to 20,264.40, 30,387.48 and 8,571.60

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Solution

The fourth proportional to 20,264.40, 30,387.48 and 8,571.60 is: 12,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,264.40 : 30,387.48 = 8,571.60 : x
  2. Step 2: Convert to fraction form
    20,264.40/30,387.48 = 8,571.60/x
  3. Step 3: Cross multiply
    20,264.40x = 30,387.48 × 8,571.60
  4. Step 4: Simplify right side
    20,264.40x = 260,469,323.57
  5. Step 5: Solve for x
    x = 260,469,323.57/20,264.40
  6. Step 6: Final answer
    x = 12,853.54

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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.