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Finding the Fourth Proportional to 18,373,980.60, 27,560,970.90 and 12,894,233.40

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Solution

The fourth proportional to 18,373,980.60, 27,560,970.90 and 12,894,233.40 is: 19,341,350.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373,980.60 : 27,560,970.90 = 12,894,233.40 : x
  2. Step 2: Convert to fraction form
    18,373,980.60/27,560,970.90 = 12,894,233.40/x
  3. Step 3: Cross multiply
    18,373,980.60x = 27,560,970.90 × 12,894,233.40
  4. Step 4: Simplify right side
    18,373,980.60x = 355,377,591,515,208.06
  5. Step 5: Solve for x
    x = 355,377,591,515,208.06/18,373,980.60
  6. Step 6: Final answer
    x = 19,341,350.10

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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.