Home / 21,197,826.20-31,796,739.30-19,780,650.20

Finding the Fourth Proportional to 21,197,826.20, 31,796,739.30 and 19,780,650.20

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Solution

The fourth proportional to 21,197,826.20, 31,796,739.30 and 19,780,650.20 is: 29,670,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197,826.20 : 31,796,739.30 = 19,780,650.20 : x
  2. Step 2: Convert to fraction form
    21,197,826.20/31,796,739.30 = 19,780,650.20/x
  3. Step 3: Cross multiply
    21,197,826.20x = 31,796,739.30 × 19,780,650.20
  4. Step 4: Simplify right side
    21,197,826.20x = 628,960,177,593,892.88
  5. Step 5: Solve for x
    x = 628,960,177,593,892.88/21,197,826.20
  6. Step 6: Final answer
    x = 29,670,975.30

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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.