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Finding the Fourth Proportional to 13,597,469.70, 20,348,965.35 and 12,463,728.90

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Solution

The fourth proportional to 13,597,469.70, 20,348,965.35 and 12,463,728.90 is: 18,652,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,597,469.70 : 20,348,965.35 = 12,463,728.90 : x
  2. Step 2: Convert to fraction form
    13,597,469.70/20,348,965.35 = 12,463,728.90/x
  3. Step 3: Cross multiply
    13,597,469.70x = 20,348,965.35 × 12,463,728.90
  4. Step 4: Simplify right side
    13,597,469.70x = 253,623,987,517,893.66
  5. Step 5: Solve for x
    x = 253,623,987,517,893.66/13,597,469.70
  6. Step 6: Final answer
    x = 18,652,292.90

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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.