Home / 13,725.75-18,945.87-8,757.75

Finding the Fourth Proportional to 13,725.75, 18,945.87 and 8,757.75

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Solution

The fourth proportional to 13,725.75, 18,945.87 and 8,757.75 is: 12,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.75 : 18,945.87 = 8,757.75 : x
  2. Step 2: Convert to fraction form
    13,725.75/18,945.87 = 8,757.75/x
  3. Step 3: Cross multiply
    13,725.75x = 18,945.87 × 8,757.75
  4. Step 4: Simplify right side
    13,725.75x = 165,923,192.99
  5. Step 5: Solve for x
    x = 165,923,192.99/13,725.75
  6. Step 6: Final answer
    x = 12,088.46

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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.