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Finding the Fourth Proportional to 18,006.70, 27,022.20 and 10,109.20

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Solution

The fourth proportional to 18,006.70, 27,022.20 and 10,109.20 is: 15,170.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,006.70 : 27,022.20 = 10,109.20 : x
  2. Step 2: Convert to fraction form
    18,006.70/27,022.20 = 10,109.20/x
  3. Step 3: Cross multiply
    18,006.70x = 27,022.20 × 10,109.20
  4. Step 4: Simplify right side
    18,006.70x = 273,172,824.24
  5. Step 5: Solve for x
    x = 273,172,824.24/18,006.70
  6. Step 6: Final answer
    x = 15,170.62

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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.