Home / 12,628.19-18,942.28-3,394.19

Finding the Fourth Proportional to 12,628.19, 18,942.28 and 3,394.19

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Solution

The fourth proportional to 12,628.19, 18,942.28 and 3,394.19 is: 5,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.19 : 18,942.28 = 3,394.19 : x
  2. Step 2: Convert to fraction form
    12,628.19/18,942.28 = 3,394.19/x
  3. Step 3: Cross multiply
    12,628.19x = 18,942.28 × 3,394.19
  4. Step 4: Simplify right side
    12,628.19x = 64,293,697.35
  5. Step 5: Solve for x
    x = 64,293,697.35/12,628.19
  6. Step 6: Final answer
    x = 5,091.28

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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.