Home / 13,757.28-18,975.33-8,455.02

Finding the Fourth Proportional to 13,757.28, 18,975.33 and 8,455.02

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Solution

The fourth proportional to 13,757.28, 18,975.33 and 8,455.02 is: 11,661.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.28 : 18,975.33 = 8,455.02 : x
  2. Step 2: Convert to fraction form
    13,757.28/18,975.33 = 8,455.02/x
  3. Step 3: Cross multiply
    13,757.28x = 18,975.33 × 8,455.02
  4. Step 4: Simplify right side
    13,757.28x = 160,436,794.66
  5. Step 5: Solve for x
    x = 160,436,794.66/13,757.28
  6. Step 6: Final answer
    x = 11,661.96

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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.