Home / 13,255.06-18,272.82-8,771.30

Finding the Fourth Proportional to 13,255.06, 18,272.82 and 8,771.30

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Solution

The fourth proportional to 13,255.06, 18,272.82 and 8,771.30 is: 12,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.06 : 18,272.82 = 8,771.30 : x
  2. Step 2: Convert to fraction form
    13,255.06/18,272.82 = 8,771.30/x
  3. Step 3: Cross multiply
    13,255.06x = 18,272.82 × 8,771.30
  4. Step 4: Simplify right side
    13,255.06x = 160,276,386.07
  5. Step 5: Solve for x
    x = 160,276,386.07/13,255.06
  6. Step 6: Final answer
    x = 12,091.71

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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.