Home / 18,630.78-25,709.94-10,247.28

Finding the Fourth Proportional to 18,630.78, 25,709.94 and 10,247.28

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Solution

The fourth proportional to 18,630.78, 25,709.94 and 10,247.28 is: 14,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.78 : 25,709.94 = 10,247.28 : x
  2. Step 2: Convert to fraction form
    18,630.78/25,709.94 = 10,247.28/x
  3. Step 3: Cross multiply
    18,630.78x = 25,709.94 × 10,247.28
  4. Step 4: Simplify right side
    18,630.78x = 263,456,953.96
  5. Step 5: Solve for x
    x = 263,456,953.96/18,630.78
  6. Step 6: Final answer
    x = 14,140.95

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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.