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Finding the Fourth Proportional to 13,310.99, 18,371.34 and 8,008.73

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Solution

The fourth proportional to 13,310.99, 18,371.34 and 8,008.73 is: 11,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.99 : 18,371.34 = 8,008.73 : x
  2. Step 2: Convert to fraction form
    13,310.99/18,371.34 = 8,008.73/x
  3. Step 3: Cross multiply
    13,310.99x = 18,371.34 × 8,008.73
  4. Step 4: Simplify right side
    13,310.99x = 147,131,101.80
  5. Step 5: Solve for x
    x = 147,131,101.80/13,310.99
  6. Step 6: Final answer
    x = 11,053.36

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Double scale
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Similar ratio
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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.