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Finding the Fourth Proportional to 18,647,573.80, 27,971,360.70 and 5,871,994.60

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Solution

The fourth proportional to 18,647,573.80, 27,971,360.70 and 5,871,994.60 is: 8,807,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647,573.80 : 27,971,360.70 = 5,871,994.60 : x
  2. Step 2: Convert to fraction form
    18,647,573.80/27,971,360.70 = 5,871,994.60/x
  3. Step 3: Cross multiply
    18,647,573.80x = 27,971,360.70 × 5,871,994.60
  4. Step 4: Simplify right side
    18,647,573.80x = 164,247,678,985,052.22
  5. Step 5: Solve for x
    x = 164,247,678,985,052.22/18,647,573.80
  6. Step 6: Final answer
    x = 8,807,991.90

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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.