Home / 13,217.47-18,229.52-11,620.73

Finding the Fourth Proportional to 13,217.47, 18,229.52 and 11,620.73

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Solution

The fourth proportional to 13,217.47, 18,229.52 and 11,620.73 is: 16,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.47 : 18,229.52 = 11,620.73 : x
  2. Step 2: Convert to fraction form
    13,217.47/18,229.52 = 11,620.73/x
  3. Step 3: Cross multiply
    13,217.47x = 18,229.52 × 11,620.73
  4. Step 4: Simplify right side
    13,217.47x = 211,840,329.95
  5. Step 5: Solve for x
    x = 211,840,329.95/13,217.47
  6. Step 6: Final answer
    x = 16,027.30

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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.