Home / 18,634.78-25,715.97-10,251.28

Finding the Fourth Proportional to 18,634.78, 25,715.97 and 10,251.28

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Solution

The fourth proportional to 18,634.78, 25,715.97 and 10,251.28 is: 14,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.78 : 25,715.97 = 10,251.28 : x
  2. Step 2: Convert to fraction form
    18,634.78/25,715.97 = 10,251.28/x
  3. Step 3: Cross multiply
    18,634.78x = 25,715.97 × 10,251.28
  4. Step 4: Simplify right side
    18,634.78x = 263,621,608.94
  5. Step 5: Solve for x
    x = 263,621,608.94/18,634.78
  6. Step 6: Final answer
    x = 14,146.75

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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.