Home / 12,821,929.95-19,202,363.31-7,419,194.31

Finding the Fourth Proportional to 12,821,929.95, 19,202,363.31 and 7,419,194.31

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Solution

The fourth proportional to 12,821,929.95, 19,202,363.31 and 7,419,194.31 is: 11,111,124.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821,929.95 : 19,202,363.31 = 7,419,194.31 : x
  2. Step 2: Convert to fraction form
    12,821,929.95/19,202,363.31 = 7,419,194.31/x
  3. Step 3: Cross multiply
    12,821,929.95x = 19,202,363.31 × 7,419,194.31
  4. Step 4: Simplify right side
    12,821,929.95x = 142,466,064,608,104.75
  5. Step 5: Solve for x
    x = 142,466,064,608,104.75/12,821,929.95
  6. Step 6: Final answer
    x = 11,111,124.86

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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.