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Finding the Fourth Proportional to 18,192.20, 27,273.90 and 9,984.20

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Solution

The fourth proportional to 18,192.20, 27,273.90 and 9,984.20 is: 14,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,192.20 : 27,273.90 = 9,984.20 : x
  2. Step 2: Convert to fraction form
    18,192.20/27,273.90 = 9,984.20/x
  3. Step 3: Cross multiply
    18,192.20x = 27,273.90 × 9,984.20
  4. Step 4: Simplify right side
    18,192.20x = 272,308,072.38
  5. Step 5: Solve for x
    x = 272,308,072.38/18,192.20
  6. Step 6: Final answer
    x = 14,968.40

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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.