Home / 27,918.12-41,870.70-8,191.38

Finding the Fourth Proportional to 27,918.12, 41,870.70 and 8,191.38

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Solution

The fourth proportional to 27,918.12, 41,870.70 and 8,191.38 is: 12,285.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.12 : 41,870.70 = 8,191.38 : x
  2. Step 2: Convert to fraction form
    27,918.12/41,870.70 = 8,191.38/x
  3. Step 3: Cross multiply
    27,918.12x = 41,870.70 × 8,191.38
  4. Step 4: Simplify right side
    27,918.12x = 342,978,814.57
  5. Step 5: Solve for x
    x = 342,978,814.57/27,918.12
  6. Step 6: Final answer
    x = 12,285.17

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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.