Home / 12,078.36-18,117.54-3,313.20

Finding the Fourth Proportional to 12,078.36, 18,117.54 and 3,313.20

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Solution

The fourth proportional to 12,078.36, 18,117.54 and 3,313.20 is: 4,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.36 : 18,117.54 = 3,313.20 : x
  2. Step 2: Convert to fraction form
    12,078.36/18,117.54 = 3,313.20/x
  3. Step 3: Cross multiply
    12,078.36x = 18,117.54 × 3,313.20
  4. Step 4: Simplify right side
    12,078.36x = 60,027,033.53
  5. Step 5: Solve for x
    x = 60,027,033.53/12,078.36
  6. Step 6: Final answer
    x = 4,969.80

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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.