Home / 21,206,419.20-31,809,628.80-19,647,525.60

Finding the Fourth Proportional to 21,206,419.20, 31,809,628.80 and 19,647,525.60

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Solution

The fourth proportional to 21,206,419.20, 31,809,628.80 and 19,647,525.60 is: 29,471,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206,419.20 : 31,809,628.80 = 19,647,525.60 : x
  2. Step 2: Convert to fraction form
    21,206,419.20/31,809,628.80 = 19,647,525.60/x
  3. Step 3: Cross multiply
    21,206,419.20x = 31,809,628.80 × 19,647,525.60
  4. Step 4: Simplify right side
    21,206,419.20x = 624,980,496,174,497.38
  5. Step 5: Solve for x
    x = 624,980,496,174,497.38/21,206,419.20
  6. Step 6: Final answer
    x = 29,471,288.40

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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.