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Finding the Fourth Proportional to 13,608,605.34, 20,409,683.29 and 3,892,918.79

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Solution

The fourth proportional to 13,608,605.34, 20,409,683.29 and 3,892,918.79 is: 5,838,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,605.34 : 20,409,683.29 = 3,892,918.79 : x
  2. Step 2: Convert to fraction form
    13,608,605.34/20,409,683.29 = 3,892,918.79/x
  3. Step 3: Cross multiply
    13,608,605.34x = 20,409,683.29 × 3,892,918.79
  4. Step 4: Simplify right side
    13,608,605.34x = 79,453,239,618,881.94
  5. Step 5: Solve for x
    x = 79,453,239,618,881.94/13,608,605.34
  6. Step 6: Final answer
    x = 5,838,455.71

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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.