Home / 18,718,834.20-28,206,021.08-15,381,872.56

Finding the Fourth Proportional to 18,718,834.20, 28,206,021.08 and 15,381,872.56

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Solution

The fourth proportional to 18,718,834.20, 28,206,021.08 and 15,381,872.56 is: 23,177,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,834.20 : 28,206,021.08 = 15,381,872.56 : x
  2. Step 2: Convert to fraction form
    18,718,834.20/28,206,021.08 = 15,381,872.56/x
  3. Step 3: Cross multiply
    18,718,834.20x = 28,206,021.08 × 15,381,872.56
  4. Step 4: Simplify right side
    18,718,834.20x = 433,861,421,677,233.56
  5. Step 5: Solve for x
    x = 433,861,421,677,233.56/18,718,834.20
  6. Step 6: Final answer
    x = 23,177,801.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.