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Finding the Fourth Proportional to 17,772.10, 26,658.15 and 11,211.10

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Solution

The fourth proportional to 17,772.10, 26,658.15 and 11,211.10 is: 16,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,772.10 : 26,658.15 = 11,211.10 : x
  2. Step 2: Convert to fraction form
    17,772.10/26,658.15 = 11,211.10/x
  3. Step 3: Cross multiply
    17,772.10x = 26,658.15 × 11,211.10
  4. Step 4: Simplify right side
    17,772.10x = 298,867,185.47
  5. Step 5: Solve for x
    x = 298,867,185.47/17,772.10
  6. Step 6: Final answer
    x = 16,816.65

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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.