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Finding the Fourth Proportional to 18,158, 25,059.41 and 11,085.79

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Solution

The fourth proportional to 18,158, 25,059.41 and 11,085.79 is: 15,299.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158 : 25,059.41 = 11,085.79 : x
  2. Step 2: Convert to fraction form
    18,158/25,059.41 = 11,085.79/x
  3. Step 3: Cross multiply
    18,158x = 25,059.41 × 11,085.79
  4. Step 4: Simplify right side
    18,158x = 277,803,301.35
  5. Step 5: Solve for x
    x = 277,803,301.35/18,158
  6. Step 6: Final answer
    x = 15,299.22

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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.