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Finding the Fourth Proportional to 18,670.25, 25,765.03 and 10,286.57

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Solution

The fourth proportional to 18,670.25, 25,765.03 and 10,286.57 is: 14,195.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.25 : 25,765.03 = 10,286.57 : x
  2. Step 2: Convert to fraction form
    18,670.25/25,765.03 = 10,286.57/x
  3. Step 3: Cross multiply
    18,670.25x = 25,765.03 × 10,286.57
  4. Step 4: Simplify right side
    18,670.25x = 265,033,733.21
  5. Step 5: Solve for x
    x = 265,033,733.21/18,670.25
  6. Step 6: Final answer
    x = 14,195.51

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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.