Home / 12,183.90-18,275.58-3,418.62

Finding the Fourth Proportional to 12,183.90, 18,275.58 and 3,418.62

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Solution

The fourth proportional to 12,183.90, 18,275.58 and 3,418.62 is: 5,127.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.90 : 18,275.58 = 3,418.62 : x
  2. Step 2: Convert to fraction form
    12,183.90/18,275.58 = 3,418.62/x
  3. Step 3: Cross multiply
    12,183.90x = 18,275.58 × 3,418.62
  4. Step 4: Simplify right side
    12,183.90x = 62,477,263.30
  5. Step 5: Solve for x
    x = 62,477,263.30/12,183.90
  6. Step 6: Final answer
    x = 5,127.85

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Double scale
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Similar ratio
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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.