Home / 13,749.39-20,609.61-8,755.56

Finding the Fourth Proportional to 13,749.39, 20,609.61 and 8,755.56

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Solution

The fourth proportional to 13,749.39, 20,609.61 and 8,755.56 is: 13,124.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.39 : 20,609.61 = 8,755.56 : x
  2. Step 2: Convert to fraction form
    13,749.39/20,609.61 = 8,755.56/x
  3. Step 3: Cross multiply
    13,749.39x = 20,609.61 × 8,755.56
  4. Step 4: Simplify right side
    13,749.39x = 180,448,573.88
  5. Step 5: Solve for x
    x = 180,448,573.88/13,749.39
  6. Step 6: Final answer
    x = 13,124.12

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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.