Home / 20,670,102.74-30,984,311.63-12,999,229.65

Finding the Fourth Proportional to 20,670,102.74, 30,984,311.63 and 12,999,229.65

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Solution

The fourth proportional to 20,670,102.74, 30,984,311.63 and 12,999,229.65 is: 19,485,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670,102.74 : 30,984,311.63 = 12,999,229.65 : x
  2. Step 2: Convert to fraction form
    20,670,102.74/30,984,311.63 = 12,999,229.65/x
  3. Step 3: Cross multiply
    20,670,102.74x = 30,984,311.63 × 12,999,229.65
  4. Step 4: Simplify right side
    20,670,102.74x = 402,772,182,458,033.94
  5. Step 5: Solve for x
    x = 402,772,182,458,033.94/20,670,102.74
  6. Step 6: Final answer
    x = 19,485,736.84

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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.