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Finding the Fourth Proportional to 18,998.62, 28,473.09 and 10,214.62

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Solution

The fourth proportional to 18,998.62, 28,473.09 and 10,214.62 is: 15,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.62 : 28,473.09 = 10,214.62 : x
  2. Step 2: Convert to fraction form
    18,998.62/28,473.09 = 10,214.62/x
  3. Step 3: Cross multiply
    18,998.62x = 28,473.09 × 10,214.62
  4. Step 4: Simplify right side
    18,998.62x = 290,841,794.58
  5. Step 5: Solve for x
    x = 290,841,794.58/18,998.62
  6. Step 6: Final answer
    x = 15,308.57

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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.