Home / 20,687,306.85-28,548,483.03-11,990,523.96

Finding the Fourth Proportional to 20,687,306.85, 28,548,483.03 and 11,990,523.96

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Solution

The fourth proportional to 20,687,306.85, 28,548,483.03 and 11,990,523.96 is: 16,546,922.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,306.85 : 28,548,483.03 = 11,990,523.96 : x
  2. Step 2: Convert to fraction form
    20,687,306.85/28,548,483.03 = 11,990,523.96/x
  3. Step 3: Cross multiply
    20,687,306.85x = 28,548,483.03 × 11,990,523.96
  4. Step 4: Simplify right side
    20,687,306.85x = 342,311,269,792,868.44
  5. Step 5: Solve for x
    x = 342,311,269,792,868.44/20,687,306.85
  6. Step 6: Final answer
    x = 16,546,922.82

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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.