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Finding the Fourth Proportional to 12,110.55, 18,165.83 and 6,205.65

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Solution

The fourth proportional to 12,110.55, 18,165.83 and 6,205.65 is: 9,308.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.55 : 18,165.83 = 6,205.65 : x
  2. Step 2: Convert to fraction form
    12,110.55/18,165.83 = 6,205.65/x
  3. Step 3: Cross multiply
    12,110.55x = 18,165.83 × 6,205.65
  4. Step 4: Simplify right side
    12,110.55x = 112,730,751.91
  5. Step 5: Solve for x
    x = 112,730,751.91/12,110.55
  6. Step 6: Final answer
    x = 9,308.48

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.