Home / 20,279,940.64-27,975,850.32-13,751,360.80

Finding the Fourth Proportional to 20,279,940.64, 27,975,850.32 and 13,751,360.80

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Solution

The fourth proportional to 20,279,940.64, 27,975,850.32 and 13,751,360.80 is: 18,969,779.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279,940.64 : 27,975,850.32 = 13,751,360.80 : x
  2. Step 2: Convert to fraction form
    20,279,940.64/27,975,850.32 = 13,751,360.80/x
  3. Step 3: Cross multiply
    20,279,940.64x = 27,975,850.32 × 13,751,360.80
  4. Step 4: Simplify right side
    20,279,940.64x = 384,706,011,437,115.50
  5. Step 5: Solve for x
    x = 384,706,011,437,115.50/20,279,940.64
  6. Step 6: Final answer
    x = 18,969,779.95

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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.