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Finding the Fourth Proportional to 18,195, 25,108.49 and 10,236.75

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Solution

The fourth proportional to 18,195, 25,108.49 and 10,236.75 is: 14,126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195 : 25,108.49 = 10,236.75 : x
  2. Step 2: Convert to fraction form
    18,195/25,108.49 = 10,236.75/x
  3. Step 3: Cross multiply
    18,195x = 25,108.49 × 10,236.75
  4. Step 4: Simplify right side
    18,195x = 257,029,360.60
  5. Step 5: Solve for x
    x = 257,029,360.60/18,195
  6. Step 6: Final answer
    x = 14,126.37

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Half scale
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Double scale
Find fourth proportional to 18,196, 25,109.87 and 10,237.75
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1.5x scale

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.