Home / 13,757.30-18,989.58-8,091.80

Finding the Fourth Proportional to 13,757.30, 18,989.58 and 8,091.80

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Solution

The fourth proportional to 13,757.30, 18,989.58 and 8,091.80 is: 11,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.30 : 18,989.58 = 8,091.80 : x
  2. Step 2: Convert to fraction form
    13,757.30/18,989.58 = 8,091.80/x
  3. Step 3: Cross multiply
    13,757.30x = 18,989.58 × 8,091.80
  4. Step 4: Simplify right side
    13,757.30x = 153,659,788.50
  5. Step 5: Solve for x
    x = 153,659,788.50/13,757.30
  6. Step 6: Final answer
    x = 11,169.33

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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.