Home / 12,097,208.70-18,145,813.05-7,814,187.90

Finding the Fourth Proportional to 12,097,208.70, 18,145,813.05 and 7,814,187.90

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Solution

The fourth proportional to 12,097,208.70, 18,145,813.05 and 7,814,187.90 is: 11,721,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,097,208.70 : 18,145,813.05 = 7,814,187.90 : x
  2. Step 2: Convert to fraction form
    12,097,208.70/18,145,813.05 = 7,814,187.90/x
  3. Step 3: Cross multiply
    12,097,208.70x = 18,145,813.05 × 7,814,187.90
  4. Step 4: Simplify right side
    12,097,208.70x = 141,794,792,770,972.09
  5. Step 5: Solve for x
    x = 141,794,792,770,972.09/12,097,208.70
  6. Step 6: Final answer
    x = 11,721,281.85

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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.