Home / 18,121.95-27,179.73-4,971.15

Finding the Fourth Proportional to 18,121.95, 27,179.73 and 4,971.15

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Solution

The fourth proportional to 18,121.95, 27,179.73 and 4,971.15 is: 7,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.95 : 27,179.73 = 4,971.15 : x
  2. Step 2: Convert to fraction form
    18,121.95/27,179.73 = 4,971.15/x
  3. Step 3: Cross multiply
    18,121.95x = 27,179.73 × 4,971.15
  4. Step 4: Simplify right side
    18,121.95x = 135,114,514.79
  5. Step 5: Solve for x
    x = 135,114,514.79/18,121.95
  6. Step 6: Final answer
    x = 7,455.85

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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.