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Finding the Fourth Proportional to 12,794.55, 19,191.83 and 5,397.05

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Solution

The fourth proportional to 12,794.55, 19,191.83 and 5,397.05 is: 8,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,794.55 : 19,191.83 = 5,397.05 : x
  2. Step 2: Convert to fraction form
    12,794.55/19,191.83 = 5,397.05/x
  3. Step 3: Cross multiply
    12,794.55x = 19,191.83 × 5,397.05
  4. Step 4: Simplify right side
    12,794.55x = 103,579,143.16
  5. Step 5: Solve for x
    x = 103,579,143.16/12,794.55
  6. Step 6: Final answer
    x = 8,095.57

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Half scale
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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.