Home / 20,670,105.38-30,984,315.57-12,999,232.31

Finding the Fourth Proportional to 20,670,105.38, 30,984,315.57 and 12,999,232.31

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Solution

The fourth proportional to 20,670,105.38, 30,984,315.57 and 12,999,232.31 is: 19,485,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670,105.38 : 30,984,315.57 = 12,999,232.31 : x
  2. Step 2: Convert to fraction form
    20,670,105.38/30,984,315.57 = 12,999,232.31/x
  3. Step 3: Cross multiply
    20,670,105.38x = 30,984,315.57 × 12,999,232.31
  4. Step 4: Simplify right side
    20,670,105.38x = 402,772,315,905,858.50
  5. Step 5: Solve for x
    x = 402,772,315,905,858.50/20,670,105.38
  6. Step 6: Final answer
    x = 19,485,740.81

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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.