Home / 18,730.72-28,109.94-12,795.04

Finding the Fourth Proportional to 18,730.72, 28,109.94 and 12,795.04

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Solution

The fourth proportional to 18,730.72, 28,109.94 and 12,795.04 is: 19,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.72 : 28,109.94 = 12,795.04 : x
  2. Step 2: Convert to fraction form
    18,730.72/28,109.94 = 12,795.04/x
  3. Step 3: Cross multiply
    18,730.72x = 28,109.94 × 12,795.04
  4. Step 4: Simplify right side
    18,730.72x = 359,667,806.70
  5. Step 5: Solve for x
    x = 359,667,806.70/18,730.72
  6. Step 6: Final answer
    x = 19,202.03

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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.