Home / 20,971,342.35-31,416,712.38-12,860,667

Finding the Fourth Proportional to 20,971,342.35, 31,416,712.38 and 12,860,667

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Solution

The fourth proportional to 20,971,342.35, 31,416,712.38 and 12,860,667 is: 19,266,285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,342.35 : 31,416,712.38 = 12,860,667 : x
  2. Step 2: Convert to fraction form
    20,971,342.35/31,416,712.38 = 12,860,667/x
  3. Step 3: Cross multiply
    20,971,342.35x = 31,416,712.38 × 12,860,667
  4. Step 4: Simplify right side
    20,971,342.35x = 404,039,876,153,957.44
  5. Step 5: Solve for x
    x = 404,039,876,153,957.44/20,971,342.35
  6. Step 6: Final answer
    x = 19,266,285.84

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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.