Home / 12,947,997.80-19,421,996.70-7,909,149.80

Finding the Fourth Proportional to 12,947,997.80, 19,421,996.70 and 7,909,149.80

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Solution

The fourth proportional to 12,947,997.80, 19,421,996.70 and 7,909,149.80 is: 11,863,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947,997.80 : 19,421,996.70 = 7,909,149.80 : x
  2. Step 2: Convert to fraction form
    12,947,997.80/19,421,996.70 = 7,909,149.80/x
  3. Step 3: Cross multiply
    12,947,997.80x = 19,421,996.70 × 7,909,149.80
  4. Step 4: Simplify right side
    12,947,997.80x = 153,611,481,315,405.66
  5. Step 5: Solve for x
    x = 153,611,481,315,405.66/12,947,997.80
  6. Step 6: Final answer
    x = 11,863,724.70

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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.