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Finding the Fourth Proportional to 13,481.56, 20,213.70 and 8,859.16

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Solution

The fourth proportional to 13,481.56, 20,213.70 and 8,859.16 is: 13,283.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.56 : 20,213.70 = 8,859.16 : x
  2. Step 2: Convert to fraction form
    13,481.56/20,213.70 = 8,859.16/x
  3. Step 3: Cross multiply
    13,481.56x = 20,213.70 × 8,859.16
  4. Step 4: Simplify right side
    13,481.56x = 179,076,402.49
  5. Step 5: Solve for x
    x = 179,076,402.49/13,481.56
  6. Step 6: Final answer
    x = 13,283.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.