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Finding the Fourth Proportional to 18,469,868.80, 27,704,803.20 and 15,110,636.80

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Solution

The fourth proportional to 18,469,868.80, 27,704,803.20 and 15,110,636.80 is: 22,665,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469,868.80 : 27,704,803.20 = 15,110,636.80 : x
  2. Step 2: Convert to fraction form
    18,469,868.80/27,704,803.20 = 15,110,636.80/x
  3. Step 3: Cross multiply
    18,469,868.80x = 27,704,803.20 × 15,110,636.80
  4. Step 4: Simplify right side
    18,469,868.80x = 418,637,218,770,677.75
  5. Step 5: Solve for x
    x = 418,637,218,770,677.75/18,469,868.80
  6. Step 6: Final answer
    x = 22,665,955.20

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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.