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Finding the Fourth Proportional to 18,373,943.60, 27,560,915.40 and 12,894,196.40

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Solution

The fourth proportional to 18,373,943.60, 27,560,915.40 and 12,894,196.40 is: 19,341,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373,943.60 : 27,560,915.40 = 12,894,196.40 : x
  2. Step 2: Convert to fraction form
    18,373,943.60/27,560,915.40 = 12,894,196.40/x
  3. Step 3: Cross multiply
    18,373,943.60x = 27,560,915.40 × 12,894,196.40
  4. Step 4: Simplify right side
    18,373,943.60x = 355,375,856,131,384.56
  5. Step 5: Solve for x
    x = 355,375,856,131,384.56/18,373,943.60
  6. Step 6: Final answer
    x = 19,341,294.60

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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.