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Finding the Fourth Proportional to 18,154.71, 27,231.12 and 10,662.39

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Solution

The fourth proportional to 18,154.71, 27,231.12 and 10,662.39 is: 15,993.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.71 : 27,231.12 = 10,662.39 : x
  2. Step 2: Convert to fraction form
    18,154.71/27,231.12 = 10,662.39/x
  3. Step 3: Cross multiply
    18,154.71x = 27,231.12 × 10,662.39
  4. Step 4: Simplify right side
    18,154.71x = 290,348,821.58
  5. Step 5: Solve for x
    x = 290,348,821.58/18,154.71
  6. Step 6: Final answer
    x = 15,993.03

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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.