Home / 18,809,910.10-28,214,865.15-15,940,128.70

Finding the Fourth Proportional to 18,809,910.10, 28,214,865.15 and 15,940,128.70

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Solution

The fourth proportional to 18,809,910.10, 28,214,865.15 and 15,940,128.70 is: 23,910,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809,910.10 : 28,214,865.15 = 15,940,128.70 : x
  2. Step 2: Convert to fraction form
    18,809,910.10/28,214,865.15 = 15,940,128.70/x
  3. Step 3: Cross multiply
    18,809,910.10x = 28,214,865.15 × 15,940,128.70
  4. Step 4: Simplify right side
    18,809,910.10x = 449,748,581,744,144.75
  5. Step 5: Solve for x
    x = 449,748,581,744,144.75/18,809,910.10
  6. Step 6: Final answer
    x = 23,910,193.05

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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.