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Finding the Fourth Proportional to 18,145.24, 27,214.72 and 4,994.48

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Solution

The fourth proportional to 18,145.24, 27,214.72 and 4,994.48 is: 7,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.24 : 27,214.72 = 4,994.48 : x
  2. Step 2: Convert to fraction form
    18,145.24/27,214.72 = 4,994.48/x
  3. Step 3: Cross multiply
    18,145.24x = 27,214.72 × 4,994.48
  4. Step 4: Simplify right side
    18,145.24x = 135,923,430.30
  5. Step 5: Solve for x
    x = 135,923,430.30/18,145.24
  6. Step 6: Final answer
    x = 7,490.86

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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.