Home / 12,786,083.80-19,190,012.10-5,218,480.60

Finding the Fourth Proportional to 12,786,083.80, 19,190,012.10 and 5,218,480.60

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Solution

The fourth proportional to 12,786,083.80, 19,190,012.10 and 5,218,480.60 is: 7,832,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786,083.80 : 19,190,012.10 = 5,218,480.60 : x
  2. Step 2: Convert to fraction form
    12,786,083.80/19,190,012.10 = 5,218,480.60/x
  3. Step 3: Cross multiply
    12,786,083.80x = 19,190,012.10 × 5,218,480.60
  4. Step 4: Simplify right side
    12,786,083.80x = 100,142,705,857,615.27
  5. Step 5: Solve for x
    x = 100,142,705,857,615.27/12,786,083.80
  6. Step 6: Final answer
    x = 7,832,164.05

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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.