Home / 18,825.20-25,995.30-11,763.68

Finding the Fourth Proportional to 18,825.20, 25,995.30 and 11,763.68

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Solution

The fourth proportional to 18,825.20, 25,995.30 and 11,763.68 is: 16,244.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.20 : 25,995.30 = 11,763.68 : x
  2. Step 2: Convert to fraction form
    18,825.20/25,995.30 = 11,763.68/x
  3. Step 3: Cross multiply
    18,825.20x = 25,995.30 × 11,763.68
  4. Step 4: Simplify right side
    18,825.20x = 305,800,390.70
  5. Step 5: Solve for x
    x = 305,800,390.70/18,825.20
  6. Step 6: Final answer
    x = 16,244.20

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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.