Home / 20,569,811.66-28,389,231.92-12,731,837.96

Finding the Fourth Proportional to 20,569,811.66, 28,389,231.92 and 12,731,837.96

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Solution

The fourth proportional to 20,569,811.66, 28,389,231.92 and 12,731,837.96 is: 17,571,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,811.66 : 28,389,231.92 = 12,731,837.96 : x
  2. Step 2: Convert to fraction form
    20,569,811.66/28,389,231.92 = 12,731,837.96/x
  3. Step 3: Cross multiply
    20,569,811.66x = 28,389,231.92 × 12,731,837.96
  4. Step 4: Simplify right side
    20,569,811.66x = 361,447,100,504,183.12
  5. Step 5: Solve for x
    x = 361,447,100,504,183.12/20,569,811.66
  6. Step 6: Final answer
    x = 17,571,726.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.