Home / 13,751.20-18,975.90-8,086.60

Finding the Fourth Proportional to 13,751.20, 18,975.90 and 8,086.60

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Solution

The fourth proportional to 13,751.20, 18,975.90 and 8,086.60 is: 11,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.20 : 18,975.90 = 8,086.60 : x
  2. Step 2: Convert to fraction form
    13,751.20/18,975.90 = 8,086.60/x
  3. Step 3: Cross multiply
    13,751.20x = 18,975.90 × 8,086.60
  4. Step 4: Simplify right side
    13,751.20x = 153,450,512.94
  5. Step 5: Solve for x
    x = 153,450,512.94/13,751.20
  6. Step 6: Final answer
    x = 11,159.06

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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.