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Finding the Fourth Proportional to 18,212.68, 27,308.65 and 8,850.20

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Solution

The fourth proportional to 18,212.68, 27,308.65 and 8,850.20 is: 13,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.68 : 27,308.65 = 8,850.20 : x
  2. Step 2: Convert to fraction form
    18,212.68/27,308.65 = 8,850.20/x
  3. Step 3: Cross multiply
    18,212.68x = 27,308.65 × 8,850.20
  4. Step 4: Simplify right side
    18,212.68x = 241,686,897.05
  5. Step 5: Solve for x
    x = 241,686,897.05/18,212.68
  6. Step 6: Final answer
    x = 13,270.25

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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.