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Finding the Fourth Proportional to 13,906,469.60, 20,869,035.60 and 8,220,658.40

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Solution

The fourth proportional to 13,906,469.60, 20,869,035.60 and 8,220,658.40 is: 12,336,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906,469.60 : 20,869,035.60 = 8,220,658.40 : x
  2. Step 2: Convert to fraction form
    13,906,469.60/20,869,035.60 = 8,220,658.40/x
  3. Step 3: Cross multiply
    13,906,469.60x = 20,869,035.60 × 8,220,658.40
  4. Step 4: Simplify right side
    13,906,469.60x = 171,557,212,805,039.06
  5. Step 5: Solve for x
    x = 171,557,212,805,039.06/13,906,469.60
  6. Step 6: Final answer
    x = 12,336,503.64

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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.