Home / 18,885,715.10-28,370,563.05-18,171,878.30

Finding the Fourth Proportional to 18,885,715.10, 28,370,563.05 and 18,171,878.30

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Solution

The fourth proportional to 18,885,715.10, 28,370,563.05 and 18,171,878.30 is: 27,298,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,715.10 : 28,370,563.05 = 18,171,878.30 : x
  2. Step 2: Convert to fraction form
    18,885,715.10/28,370,563.05 = 18,171,878.30/x
  3. Step 3: Cross multiply
    18,885,715.10x = 28,370,563.05 × 18,171,878.30
  4. Step 4: Simplify right side
    18,885,715.10x = 515,546,419,047,076.88
  5. Step 5: Solve for x
    x = 515,546,419,047,076.88/18,885,715.10
  6. Step 6: Final answer
    x = 27,298,220.71

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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.