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Finding the Fourth Proportional to 19,764,703.20, 29,647,054.80 and 10,198,765.20

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Solution

The fourth proportional to 19,764,703.20, 29,647,054.80 and 10,198,765.20 is: 15,298,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764,703.20 : 29,647,054.80 = 10,198,765.20 : x
  2. Step 2: Convert to fraction form
    19,764,703.20/29,647,054.80 = 10,198,765.20/x
  3. Step 3: Cross multiply
    19,764,703.20x = 29,647,054.80 × 10,198,765.20
  4. Step 4: Simplify right side
    19,764,703.20x = 302,363,350,776,732.94
  5. Step 5: Solve for x
    x = 302,363,350,776,732.94/19,764,703.20
  6. Step 6: Final answer
    x = 15,298,147.80

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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.