Home / 20,728,007.43-31,095,996.35-7,947,515.45

Finding the Fourth Proportional to 20,728,007.43, 31,095,996.35 and 7,947,515.45

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Solution

The fourth proportional to 20,728,007.43, 31,095,996.35 and 7,947,515.45 is: 11,922,801.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,007.43 : 31,095,996.35 = 7,947,515.45 : x
  2. Step 2: Convert to fraction form
    20,728,007.43/31,095,996.35 = 7,947,515.45/x
  3. Step 3: Cross multiply
    20,728,007.43x = 31,095,996.35 × 7,947,515.45
  4. Step 4: Simplify right side
    20,728,007.43x = 247,135,911,424,768.62
  5. Step 5: Solve for x
    x = 247,135,911,424,768.62/20,728,007.43
  6. Step 6: Final answer
    x = 11,922,801.18

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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.