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Finding the Fourth Proportional to 18,480.92, 27,720.48 and 6,793.40

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Solution

The fourth proportional to 18,480.92, 27,720.48 and 6,793.40 is: 10,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,480.92 : 27,720.48 = 6,793.40 : x
  2. Step 2: Convert to fraction form
    18,480.92/27,720.48 = 6,793.40/x
  3. Step 3: Cross multiply
    18,480.92x = 27,720.48 × 6,793.40
  4. Step 4: Simplify right side
    18,480.92x = 188,316,308.83
  5. Step 5: Solve for x
    x = 188,316,308.83/18,480.92
  6. Step 6: Final answer
    x = 10,189.77

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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.