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Finding the Fourth Proportional to 13,591.80, 18,748.26 and 8,003.16

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Solution

The fourth proportional to 13,591.80, 18,748.26 and 8,003.16 is: 11,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.80 : 18,748.26 = 8,003.16 : x
  2. Step 2: Convert to fraction form
    13,591.80/18,748.26 = 8,003.16/x
  3. Step 3: Cross multiply
    13,591.80x = 18,748.26 × 8,003.16
  4. Step 4: Simplify right side
    13,591.80x = 150,045,324.50
  5. Step 5: Solve for x
    x = 150,045,324.50/13,591.80
  6. Step 6: Final answer
    x = 11,039.40

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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.