Home / 28,659,048.86-39,551,147.83-21,581,972.90

Finding the Fourth Proportional to 28,659,048.86, 39,551,147.83 and 21,581,972.90

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Solution

The fourth proportional to 28,659,048.86, 39,551,147.83 and 21,581,972.90 is: 29,784,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659,048.86 : 39,551,147.83 = 21,581,972.90 : x
  2. Step 2: Convert to fraction form
    28,659,048.86/39,551,147.83 = 21,581,972.90/x
  3. Step 3: Cross multiply
    28,659,048.86x = 39,551,147.83 × 21,581,972.90
  4. Step 4: Simplify right side
    28,659,048.86x = 853,591,800,568,098.75
  5. Step 5: Solve for x
    x = 853,591,800,568,098.75/28,659,048.86
  6. Step 6: Final answer
    x = 29,784,372.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.