Home / 20,687,300.60-28,548,474.60-11,990,517.70

Finding the Fourth Proportional to 20,687,300.60, 28,548,474.60 and 11,990,517.70

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Solution

The fourth proportional to 20,687,300.60, 28,548,474.60 and 11,990,517.70 is: 16,546,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,300.60 : 28,548,474.60 = 11,990,517.70 : x
  2. Step 2: Convert to fraction form
    20,687,300.60/28,548,474.60 = 11,990,517.70/x
  3. Step 3: Cross multiply
    20,687,300.60x = 28,548,474.60 × 11,990,517.70
  4. Step 4: Simplify right side
    20,687,300.60x = 342,310,989,999,300.44
  5. Step 5: Solve for x
    x = 342,310,989,999,300.44/20,687,300.60
  6. Step 6: Final answer
    x = 16,546,914.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.