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Finding the Fourth Proportional to 13,608,605.54, 20,409,683.57 and 3,892,918.98

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Solution

The fourth proportional to 13,608,605.54, 20,409,683.57 and 3,892,918.98 is: 5,838,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,605.54 : 20,409,683.57 = 3,892,918.98 : x
  2. Step 2: Convert to fraction form
    13,608,605.54/20,409,683.57 = 3,892,918.98/x
  3. Step 3: Cross multiply
    13,608,605.54x = 20,409,683.57 × 3,892,918.98
  4. Step 4: Simplify right side
    13,608,605.54x = 79,453,244,525,982.56
  5. Step 5: Solve for x
    x = 79,453,244,525,982.56/13,608,605.54
  6. Step 6: Final answer
    x = 5,838,455.99

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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.