Home / 13,131,976.68-17,990,724.06-12,640,902.66

Finding the Fourth Proportional to 13,131,976.68, 17,990,724.06 and 12,640,902.66

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Solution

The fourth proportional to 13,131,976.68, 17,990,724.06 and 12,640,902.66 is: 17,317,955.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131,976.68 : 17,990,724.06 = 12,640,902.66 : x
  2. Step 2: Convert to fraction form
    13,131,976.68/17,990,724.06 = 12,640,902.66/x
  3. Step 3: Cross multiply
    13,131,976.68x = 17,990,724.06 × 12,640,902.66
  4. Step 4: Simplify right side
    13,131,976.68x = 227,418,991,625,380
  5. Step 5: Solve for x
    x = 227,418,991,625,380/13,131,976.68
  6. Step 6: Final answer
    x = 17,317,955.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.