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Finding the Fourth Proportional to 11,347,893.70, 17,021,840.55 and 7,764,712.90

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Solution

The fourth proportional to 11,347,893.70, 17,021,840.55 and 7,764,712.90 is: 11,647,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,347,893.70 : 17,021,840.55 = 7,764,712.90 : x
  2. Step 2: Convert to fraction form
    11,347,893.70/17,021,840.55 = 7,764,712.90/x
  3. Step 3: Cross multiply
    11,347,893.70x = 17,021,840.55 × 7,764,712.90
  4. Step 4: Simplify right side
    11,347,893.70x = 132,169,704,900,328.11
  5. Step 5: Solve for x
    x = 132,169,704,900,328.11/11,347,893.70
  6. Step 6: Final answer
    x = 11,647,069.35

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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.