Home / 18,491.74-25,493.72-12,107.30

Finding the Fourth Proportional to 18,491.74, 25,493.72 and 12,107.30

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Solution

The fourth proportional to 18,491.74, 25,493.72 and 12,107.30 is: 16,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.74 : 25,493.72 = 12,107.30 : x
  2. Step 2: Convert to fraction form
    18,491.74/25,493.72 = 12,107.30/x
  3. Step 3: Cross multiply
    18,491.74x = 25,493.72 × 12,107.30
  4. Step 4: Simplify right side
    18,491.74x = 308,659,928.15
  5. Step 5: Solve for x
    x = 308,659,928.15/18,491.74
  6. Step 6: Final answer
    x = 16,691.78

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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.