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Finding the Fourth Proportional to 18,097.80, 27,099.96 and 12,492.75

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Solution

The fourth proportional to 18,097.80, 27,099.96 and 12,492.75 is: 18,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,097.80 : 27,099.96 = 12,492.75 : x
  2. Step 2: Convert to fraction form
    18,097.80/27,099.96 = 12,492.75/x
  3. Step 3: Cross multiply
    18,097.80x = 27,099.96 × 12,492.75
  4. Step 4: Simplify right side
    18,097.80x = 338,553,025.29
  5. Step 5: Solve for x
    x = 338,553,025.29/18,097.80
  6. Step 6: Final answer
    x = 18,706.86

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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.