Home / 19,821,156.78-29,728,191.74-12,611,273.88

Finding the Fourth Proportional to 19,821,156.78, 29,728,191.74 and 12,611,273.88

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Solution

The fourth proportional to 19,821,156.78, 29,728,191.74 and 12,611,273.88 is: 18,914,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821,156.78 : 29,728,191.74 = 12,611,273.88 : x
  2. Step 2: Convert to fraction form
    19,821,156.78/29,728,191.74 = 12,611,273.88/x
  3. Step 3: Cross multiply
    19,821,156.78x = 29,728,191.74 × 12,611,273.88
  4. Step 4: Simplify right side
    19,821,156.78x = 374,910,367,990,293.75
  5. Step 5: Solve for x
    x = 374,910,367,990,293.75/19,821,156.78
  6. Step 6: Final answer
    x = 18,914,656.30

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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.