Home / 12,481.74-18,716.40-4,158.90

Finding the Fourth Proportional to 12,481.74, 18,716.40 and 4,158.90

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Solution

The fourth proportional to 12,481.74, 18,716.40 and 4,158.90 is: 6,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.74 : 18,716.40 = 4,158.90 : x
  2. Step 2: Convert to fraction form
    12,481.74/18,716.40 = 4,158.90/x
  3. Step 3: Cross multiply
    12,481.74x = 18,716.40 × 4,158.90
  4. Step 4: Simplify right side
    12,481.74x = 77,839,635.96
  5. Step 5: Solve for x
    x = 77,839,635.96/12,481.74
  6. Step 6: Final answer
    x = 6,236.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.