Home / 13,897,906.60-20,837,139.90-8,215,205.80

Finding the Fourth Proportional to 13,897,906.60, 20,837,139.90 and 8,215,205.80

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Solution

The fourth proportional to 13,897,906.60, 20,837,139.90 and 8,215,205.80 is: 12,317,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897,906.60 : 20,837,139.90 = 8,215,205.80 : x
  2. Step 2: Convert to fraction form
    13,897,906.60/20,837,139.90 = 8,215,205.80/x
  3. Step 3: Cross multiply
    13,897,906.60x = 20,837,139.90 × 8,215,205.80
  4. Step 4: Simplify right side
    13,897,906.60x = 171,181,392,561,891.41
  5. Step 5: Solve for x
    x = 171,181,392,561,891.41/13,897,906.60
  6. Step 6: Final answer
    x = 12,317,063.10

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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.