Home / 21,197,847.70-31,796,771.55-19,780,671.70

Finding the Fourth Proportional to 21,197,847.70, 31,796,771.55 and 19,780,671.70

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Solution

The fourth proportional to 21,197,847.70, 31,796,771.55 and 19,780,671.70 is: 29,671,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197,847.70 : 31,796,771.55 = 19,780,671.70 : x
  2. Step 2: Convert to fraction form
    21,197,847.70/31,796,771.55 = 19,780,671.70/x
  3. Step 3: Cross multiply
    21,197,847.70x = 31,796,771.55 × 19,780,671.70
  4. Step 4: Simplify right side
    21,197,847.70x = 628,961,499,150,450.12
  5. Step 5: Solve for x
    x = 628,961,499,150,450.12/21,197,847.70
  6. Step 6: Final answer
    x = 29,671,007.55

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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.