Home / 18,791.49-25,919.78-12,085.61

Finding the Fourth Proportional to 18,791.49, 25,919.78 and 12,085.61

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Solution

The fourth proportional to 18,791.49, 25,919.78 and 12,085.61 is: 16,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.49 : 25,919.78 = 12,085.61 : x
  2. Step 2: Convert to fraction form
    18,791.49/25,919.78 = 12,085.61/x
  3. Step 3: Cross multiply
    18,791.49x = 25,919.78 × 12,085.61
  4. Step 4: Simplify right side
    18,791.49x = 313,256,162.34
  5. Step 5: Solve for x
    x = 313,256,162.34/18,791.49
  6. Step 6: Final answer
    x = 16,670.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.