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Finding the Fourth Proportional to 18,540.37, 27,810.36 and 7,439.08

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Solution

The fourth proportional to 18,540.37, 27,810.36 and 7,439.08 is: 11,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.37 : 27,810.36 = 7,439.08 : x
  2. Step 2: Convert to fraction form
    18,540.37/27,810.36 = 7,439.08/x
  3. Step 3: Cross multiply
    18,540.37x = 27,810.36 × 7,439.08
  4. Step 4: Simplify right side
    18,540.37x = 206,883,492.87
  5. Step 5: Solve for x
    x = 206,883,492.87/18,540.37
  6. Step 6: Final answer
    x = 11,158.54

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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.