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Finding the Fourth Proportional to 18,756,914.84, 28,134,847.36 and 5,978,186.36

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Solution

The fourth proportional to 18,756,914.84, 28,134,847.36 and 5,978,186.36 is: 8,967,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756,914.84 : 28,134,847.36 = 5,978,186.36 : x
  2. Step 2: Convert to fraction form
    18,756,914.84/28,134,847.36 = 5,978,186.36/x
  3. Step 3: Cross multiply
    18,756,914.84x = 28,134,847.36 × 5,978,186.36
  4. Step 4: Simplify right side
    18,756,914.84x = 168,195,360,728,234
  5. Step 5: Solve for x
    x = 168,195,360,728,234/18,756,914.84
  6. Step 6: Final answer
    x = 8,967,112.24

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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.