Home / 13,782.36-20,673.54-3,394.12

Finding the Fourth Proportional to 13,782.36, 20,673.54 and 3,394.12

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Solution

The fourth proportional to 13,782.36, 20,673.54 and 3,394.12 is: 5,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.36 : 20,673.54 = 3,394.12 : x
  2. Step 2: Convert to fraction form
    13,782.36/20,673.54 = 3,394.12/x
  3. Step 3: Cross multiply
    13,782.36x = 20,673.54 × 3,394.12
  4. Step 4: Simplify right side
    13,782.36x = 70,168,475.58
  5. Step 5: Solve for x
    x = 70,168,475.58/13,782.36
  6. Step 6: Final answer
    x = 5,091.18

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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.