Home / 13,195.28-18,209.60-8,158.36

Finding the Fourth Proportional to 13,195.28, 18,209.60 and 8,158.36

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Solution

The fourth proportional to 13,195.28, 18,209.60 and 8,158.36 is: 11,258.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.28 : 18,209.60 = 8,158.36 : x
  2. Step 2: Convert to fraction form
    13,195.28/18,209.60 = 8,158.36/x
  3. Step 3: Cross multiply
    13,195.28x = 18,209.60 × 8,158.36
  4. Step 4: Simplify right side
    13,195.28x = 148,560,472.26
  5. Step 5: Solve for x
    x = 148,560,472.26/13,195.28
  6. Step 6: Final answer
    x = 11,258.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.