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Finding the Fourth Proportional to 27,168.96, 40,745.12 and 18,789.34

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Solution

The fourth proportional to 27,168.96, 40,745.12 and 18,789.34 is: 28,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,168.96 : 40,745.12 = 18,789.34 : x
  2. Step 2: Convert to fraction form
    27,168.96/40,745.12 = 18,789.34/x
  3. Step 3: Cross multiply
    27,168.96x = 40,745.12 × 18,789.34
  4. Step 4: Simplify right side
    27,168.96x = 765,573,913.02
  5. Step 5: Solve for x
    x = 765,573,913.02/27,168.96
  6. Step 6: Final answer
    x = 28,178.26

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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.