Home / 12,605.14-18,910.55-4,171.62

Finding the Fourth Proportional to 12,605.14, 18,910.55 and 4,171.62

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Solution

The fourth proportional to 12,605.14, 18,910.55 and 4,171.62 is: 6,258.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.14 : 18,910.55 = 4,171.62 : x
  2. Step 2: Convert to fraction form
    12,605.14/18,910.55 = 4,171.62/x
  3. Step 3: Cross multiply
    12,605.14x = 18,910.55 × 4,171.62
  4. Step 4: Simplify right side
    12,605.14x = 78,887,628.59
  5. Step 5: Solve for x
    x = 78,887,628.59/12,605.14
  6. Step 6: Final answer
    x = 6,258.37

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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.