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Finding the Fourth Proportional to 18,355.26, 27,528.74 and 8,489.13

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Solution

The fourth proportional to 18,355.26, 27,528.74 and 8,489.13 is: 12,731.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.26 : 27,528.74 = 8,489.13 : x
  2. Step 2: Convert to fraction form
    18,355.26/27,528.74 = 8,489.13/x
  3. Step 3: Cross multiply
    18,355.26x = 27,528.74 × 8,489.13
  4. Step 4: Simplify right side
    18,355.26x = 233,695,052.60
  5. Step 5: Solve for x
    x = 233,695,052.60/18,355.26
  6. Step 6: Final answer
    x = 12,731.78

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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.