Home / 18,811.17-28,227.69-7,725.83

Finding the Fourth Proportional to 18,811.17, 28,227.69 and 7,725.83

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Solution

The fourth proportional to 18,811.17, 28,227.69 and 7,725.83 is: 11,593.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.17 : 28,227.69 = 7,725.83 : x
  2. Step 2: Convert to fraction form
    18,811.17/28,227.69 = 7,725.83/x
  3. Step 3: Cross multiply
    18,811.17x = 28,227.69 × 7,725.83
  4. Step 4: Simplify right side
    18,811.17x = 218,082,193.09
  5. Step 5: Solve for x
    x = 218,082,193.09/18,811.17
  6. Step 6: Final answer
    x = 11,593.23

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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.