Home / 20,786,375.74-28,684,254.11-11,965,451.60

Finding the Fourth Proportional to 20,786,375.74, 28,684,254.11 and 11,965,451.60

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Solution

The fourth proportional to 20,786,375.74, 28,684,254.11 and 11,965,451.60 is: 16,511,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,375.74 : 28,684,254.11 = 11,965,451.60 : x
  2. Step 2: Convert to fraction form
    20,786,375.74/28,684,254.11 = 11,965,451.60/x
  3. Step 3: Cross multiply
    20,786,375.74x = 28,684,254.11 × 11,965,451.60
  4. Step 4: Simplify right side
    20,786,375.74x = 343,220,054,235,306.06
  5. Step 5: Solve for x
    x = 343,220,054,235,306.06/20,786,375.74
  6. Step 6: Final answer
    x = 16,511,779.57

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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.