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Finding the Fourth Proportional to 12,101.30, 18,151.95 and 11,007.80

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Solution

The fourth proportional to 12,101.30, 18,151.95 and 11,007.80 is: 16,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.30 : 18,151.95 = 11,007.80 : x
  2. Step 2: Convert to fraction form
    12,101.30/18,151.95 = 11,007.80/x
  3. Step 3: Cross multiply
    12,101.30x = 18,151.95 × 11,007.80
  4. Step 4: Simplify right side
    12,101.30x = 199,813,035.21
  5. Step 5: Solve for x
    x = 199,813,035.21/12,101.30
  6. Step 6: Final answer
    x = 16,511.70

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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.