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Finding the Fourth Proportional to 18,189.54, 25,101.77 and 10,231.70

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Solution

The fourth proportional to 18,189.54, 25,101.77 and 10,231.70 is: 14,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.54 : 25,101.77 = 10,231.70 : x
  2. Step 2: Convert to fraction form
    18,189.54/25,101.77 = 10,231.70/x
  3. Step 3: Cross multiply
    18,189.54x = 25,101.77 × 10,231.70
  4. Step 4: Simplify right side
    18,189.54x = 256,833,603.44
  5. Step 5: Solve for x
    x = 256,833,603.44/18,189.54
  6. Step 6: Final answer
    x = 14,119.85

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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.