Home / 12,008.45-18,012.68-3,243.59

Finding the Fourth Proportional to 12,008.45, 18,012.68 and 3,243.59

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Solution

The fourth proportional to 12,008.45, 18,012.68 and 3,243.59 is: 4,865.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.45 : 18,012.68 = 3,243.59 : x
  2. Step 2: Convert to fraction form
    12,008.45/18,012.68 = 3,243.59/x
  3. Step 3: Cross multiply
    12,008.45x = 18,012.68 × 3,243.59
  4. Step 4: Simplify right side
    12,008.45x = 58,425,823.47
  5. Step 5: Solve for x
    x = 58,425,823.47/12,008.45
  6. Step 6: Final answer
    x = 4,865.39

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Similar ratio
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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.