Home / 19,360,039.80-29,040,059.70-12,989,940.60

Finding the Fourth Proportional to 19,360,039.80, 29,040,059.70 and 12,989,940.60

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Solution

The fourth proportional to 19,360,039.80, 29,040,059.70 and 12,989,940.60 is: 19,484,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,360,039.80 : 29,040,059.70 = 12,989,940.60 : x
  2. Step 2: Convert to fraction form
    19,360,039.80/29,040,059.70 = 12,989,940.60/x
  3. Step 3: Cross multiply
    19,360,039.80x = 29,040,059.70 × 12,989,940.60
  4. Step 4: Simplify right side
    19,360,039.80x = 377,228,650,523,453.81
  5. Step 5: Solve for x
    x = 377,228,650,523,453.81/19,360,039.80
  6. Step 6: Final answer
    x = 19,484,910.90

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1.5x scale

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.