Home / 18,694.20-25,798.86-11,985.72

Finding the Fourth Proportional to 18,694.20, 25,798.86 and 11,985.72

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Solution

The fourth proportional to 18,694.20, 25,798.86 and 11,985.72 is: 16,540.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.20 : 25,798.86 = 11,985.72 : x
  2. Step 2: Convert to fraction form
    18,694.20/25,798.86 = 11,985.72/x
  3. Step 3: Cross multiply
    18,694.20x = 25,798.86 × 11,985.72
  4. Step 4: Simplify right side
    18,694.20x = 309,217,912.28
  5. Step 5: Solve for x
    x = 309,217,912.28/18,694.20
  6. Step 6: Final answer
    x = 16,540.85

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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.