Home / 20,687,314.59-28,548,493.92-11,990,531.70

Finding the Fourth Proportional to 20,687,314.59, 28,548,493.92 and 11,990,531.70

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Solution

The fourth proportional to 20,687,314.59, 28,548,493.92 and 11,990,531.70 is: 16,546,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,314.59 : 28,548,493.92 = 11,990,531.70 : x
  2. Step 2: Convert to fraction form
    20,687,314.59/28,548,493.92 = 11,990,531.70/x
  3. Step 3: Cross multiply
    20,687,314.59x = 28,548,493.92 × 11,990,531.70
  4. Step 4: Simplify right side
    20,687,314.59x = 342,311,621,335,017.25
  5. Step 5: Solve for x
    x = 342,311,621,335,017.25/20,687,314.59
  6. Step 6: Final answer
    x = 16,546,933.62

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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.