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Finding the Fourth Proportional to 13,800.74, 20,668.17 and 7,551.41

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Solution

The fourth proportional to 13,800.74, 20,668.17 and 7,551.41 is: 11,309.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.74 : 20,668.17 = 7,551.41 : x
  2. Step 2: Convert to fraction form
    13,800.74/20,668.17 = 7,551.41/x
  3. Step 3: Cross multiply
    13,800.74x = 20,668.17 × 7,551.41
  4. Step 4: Simplify right side
    13,800.74x = 156,073,825.62
  5. Step 5: Solve for x
    x = 156,073,825.62/13,800.74
  6. Step 6: Final answer
    x = 11,309.09

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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.