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Finding the Fourth Proportional to 18,591.33, 27,891.09 and 8,730.72

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Solution

The fourth proportional to 18,591.33, 27,891.09 and 8,730.72 is: 13,098.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.33 : 27,891.09 = 8,730.72 : x
  2. Step 2: Convert to fraction form
    18,591.33/27,891.09 = 8,730.72/x
  3. Step 3: Cross multiply
    18,591.33x = 27,891.09 × 8,730.72
  4. Step 4: Simplify right side
    18,591.33x = 243,509,297.28
  5. Step 5: Solve for x
    x = 243,509,297.28/18,591.33
  6. Step 6: Final answer
    x = 13,098.00

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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.