Home / 18,721.88-25,836.16-10,765.64

Finding the Fourth Proportional to 18,721.88, 25,836.16 and 10,765.64

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Solution

The fourth proportional to 18,721.88, 25,836.16 and 10,765.64 is: 14,856.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.88 : 25,836.16 = 10,765.64 : x
  2. Step 2: Convert to fraction form
    18,721.88/25,836.16 = 10,765.64/x
  3. Step 3: Cross multiply
    18,721.88x = 25,836.16 × 10,765.64
  4. Step 4: Simplify right side
    18,721.88x = 278,142,797.54
  5. Step 5: Solve for x
    x = 278,142,797.54/18,721.88
  6. Step 6: Final answer
    x = 14,856.56

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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.