Home / 18,687.40-25,793.64-12,634.88

Finding the Fourth Proportional to 18,687.40, 25,793.64 and 12,634.88

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Solution

The fourth proportional to 18,687.40, 25,793.64 and 12,634.88 is: 17,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.40 : 25,793.64 = 12,634.88 : x
  2. Step 2: Convert to fraction form
    18,687.40/25,793.64 = 12,634.88/x
  3. Step 3: Cross multiply
    18,687.40x = 25,793.64 × 12,634.88
  4. Step 4: Simplify right side
    18,687.40x = 325,899,546.16
  5. Step 5: Solve for x
    x = 325,899,546.16/18,687.40
  6. Step 6: Final answer
    x = 17,439.53

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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.