Home / 13,214,378.97-19,820,771.91-7,857,121.54

Finding the Fourth Proportional to 13,214,378.97, 19,820,771.91 and 7,857,121.54

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Solution

The fourth proportional to 13,214,378.97, 19,820,771.91 and 7,857,121.54 is: 11,785,208.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214,378.97 : 19,820,771.91 = 7,857,121.54 : x
  2. Step 2: Convert to fraction form
    13,214,378.97/19,820,771.91 = 7,857,121.54/x
  3. Step 3: Cross multiply
    13,214,378.97x = 19,820,771.91 × 7,857,121.54
  4. Step 4: Simplify right side
    13,214,378.97x = 155,734,213,913,487.94
  5. Step 5: Solve for x
    x = 155,734,213,913,487.94/13,214,378.97
  6. Step 6: Final answer
    x = 11,785,208.69

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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.