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Finding the Fourth Proportional to 13,604.39, 20,404.27 and 6,207.11

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Solution

The fourth proportional to 13,604.39, 20,404.27 and 6,207.11 is: 9,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.39 : 20,404.27 = 6,207.11 : x
  2. Step 2: Convert to fraction form
    13,604.39/20,404.27 = 6,207.11/x
  3. Step 3: Cross multiply
    13,604.39x = 20,404.27 × 6,207.11
  4. Step 4: Simplify right side
    13,604.39x = 126,651,430.82
  5. Step 5: Solve for x
    x = 126,651,430.82/13,604.39
  6. Step 6: Final answer
    x = 9,309.60

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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.