Home / 13,255.50-18,277.56-8,469.12

Finding the Fourth Proportional to 13,255.50, 18,277.56 and 8,469.12

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Solution

The fourth proportional to 13,255.50, 18,277.56 and 8,469.12 is: 11,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.50 : 18,277.56 = 8,469.12 : x
  2. Step 2: Convert to fraction form
    13,255.50/18,277.56 = 8,469.12/x
  3. Step 3: Cross multiply
    13,255.50x = 18,277.56 × 8,469.12
  4. Step 4: Simplify right side
    13,255.50x = 154,794,848.95
  5. Step 5: Solve for x
    x = 154,794,848.95/13,255.50
  6. Step 6: Final answer
    x = 11,677.78

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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.