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Finding the Fourth Proportional to 12,627.99, 18,941.99 and 12,609.77

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Solution

The fourth proportional to 12,627.99, 18,941.99 and 12,609.77 is: 18,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,627.99 : 18,941.99 = 12,609.77 : x
  2. Step 2: Convert to fraction form
    12,627.99/18,941.99 = 12,609.77/x
  3. Step 3: Cross multiply
    12,627.99x = 18,941.99 × 12,609.77
  4. Step 4: Simplify right side
    12,627.99x = 238,853,979.48
  5. Step 5: Solve for x
    x = 238,853,979.48/12,627.99
  6. Step 6: Final answer
    x = 18,914.65

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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.