Home / 18,981.19-28,462.46-11,085.69

Finding the Fourth Proportional to 18,981.19, 28,462.46 and 11,085.69

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Solution

The fourth proportional to 18,981.19, 28,462.46 and 11,085.69 is: 16,623.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.19 : 28,462.46 = 11,085.69 : x
  2. Step 2: Convert to fraction form
    18,981.19/28,462.46 = 11,085.69/x
  3. Step 3: Cross multiply
    18,981.19x = 28,462.46 × 11,085.69
  4. Step 4: Simplify right side
    18,981.19x = 315,525,912.89
  5. Step 5: Solve for x
    x = 315,525,912.89/18,981.19
  6. Step 6: Final answer
    x = 16,623.09

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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.