Home / 20,569,913.84-28,389,372.78-12,731,940.14

Finding the Fourth Proportional to 20,569,913.84, 28,389,372.78 and 12,731,940.14

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Solution

The fourth proportional to 20,569,913.84, 28,389,372.78 and 12,731,940.14 is: 17,571,867.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,913.84 : 28,389,372.78 = 12,731,940.14 : x
  2. Step 2: Convert to fraction form
    20,569,913.84/28,389,372.78 = 12,731,940.14/x
  3. Step 3: Cross multiply
    20,569,913.84x = 28,389,372.78 × 12,731,940.14
  4. Step 4: Simplify right side
    20,569,913.84x = 361,451,794,847,105.44
  5. Step 5: Solve for x
    x = 361,451,794,847,105.44/20,569,913.84
  6. Step 6: Final answer
    x = 17,571,867.23

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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.