Home / 20,670,103.87-30,984,313.32-12,999,230.80

Finding the Fourth Proportional to 20,670,103.87, 30,984,313.32 and 12,999,230.80

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Solution

The fourth proportional to 20,670,103.87, 30,984,313.32 and 12,999,230.80 is: 19,485,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670,103.87 : 30,984,313.32 = 12,999,230.80 : x
  2. Step 2: Convert to fraction form
    20,670,103.87/30,984,313.32 = 12,999,230.80/x
  3. Step 3: Cross multiply
    20,670,103.87x = 30,984,313.32 × 12,999,230.80
  4. Step 4: Simplify right side
    20,670,103.87x = 402,772,239,948,733.44
  5. Step 5: Solve for x
    x = 402,772,239,948,733.44/20,670,103.87
  6. Step 6: Final answer
    x = 19,485,738.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.