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Finding the Fourth Proportional to 18,665, 27,997.33 and 7,569.05

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Solution

The fourth proportional to 18,665, 27,997.33 and 7,569.05 is: 11,353.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665 : 27,997.33 = 7,569.05 : x
  2. Step 2: Convert to fraction form
    18,665/27,997.33 = 7,569.05/x
  3. Step 3: Cross multiply
    18,665x = 27,997.33 × 7,569.05
  4. Step 4: Simplify right side
    18,665x = 211,913,190.64
  5. Step 5: Solve for x
    x = 211,913,190.64/18,665
  6. Step 6: Final answer
    x = 11,353.51

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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.