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Finding the Fourth Proportional to 18,363.72, 27,534.63 and 7,272

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Solution

The fourth proportional to 18,363.72, 27,534.63 and 7,272 is: 10,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.72 : 27,534.63 = 7,272 : x
  2. Step 2: Convert to fraction form
    18,363.72/27,534.63 = 7,272/x
  3. Step 3: Cross multiply
    18,363.72x = 27,534.63 × 7,272
  4. Step 4: Simplify right side
    18,363.72x = 200,231,829.36
  5. Step 5: Solve for x
    x = 200,231,829.36/18,363.72
  6. Step 6: Final answer
    x = 10,903.66

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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.