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Finding the Fourth Proportional to 18,189.60, 25,101.54 and 10,231.82

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Solution

The fourth proportional to 18,189.60, 25,101.54 and 10,231.82 is: 14,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.60 : 25,101.54 = 10,231.82 : x
  2. Step 2: Convert to fraction form
    18,189.60/25,101.54 = 10,231.82/x
  3. Step 3: Cross multiply
    18,189.60x = 25,101.54 × 10,231.82
  4. Step 4: Simplify right side
    18,189.60x = 256,834,439.00
  5. Step 5: Solve for x
    x = 256,834,439.00/18,189.60
  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.