Home / 13,782.60-20,673.96-3,394.36

Finding the Fourth Proportional to 13,782.60, 20,673.96 and 3,394.36

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Solution

The fourth proportional to 13,782.60, 20,673.96 and 3,394.36 is: 5,091.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.60 : 20,673.96 = 3,394.36 : x
  2. Step 2: Convert to fraction form
    13,782.60/20,673.96 = 3,394.36/x
  3. Step 3: Cross multiply
    13,782.60x = 20,673.96 × 3,394.36
  4. Step 4: Simplify right side
    13,782.60x = 70,174,862.87
  5. Step 5: Solve for x
    x = 70,174,862.87/13,782.60
  6. Step 6: Final answer
    x = 5,091.55

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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.