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Finding the Fourth Proportional to 18,250, 25,185.38 and 10,290.70

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Solution

The fourth proportional to 18,250, 25,185.38 and 10,290.70 is: 14,201.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250 : 25,185.38 = 10,290.70 : x
  2. Step 2: Convert to fraction form
    18,250/25,185.38 = 10,290.70/x
  3. Step 3: Cross multiply
    18,250x = 25,185.38 × 10,290.70
  4. Step 4: Simplify right side
    18,250x = 259,175,189.97
  5. Step 5: Solve for x
    x = 259,175,189.97/18,250
  6. Step 6: Final answer
    x = 14,201.38

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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.