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Finding the Fourth Proportional to 18,572.05, 27,857.05 and 13,579.54

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Solution

The fourth proportional to 18,572.05, 27,857.05 and 13,579.54 is: 20,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.05 : 27,857.05 = 13,579.54 : x
  2. Step 2: Convert to fraction form
    18,572.05/27,857.05 = 13,579.54/x
  3. Step 3: Cross multiply
    18,572.05x = 27,857.05 × 13,579.54
  4. Step 4: Simplify right side
    18,572.05x = 378,285,753.35
  5. Step 5: Solve for x
    x = 378,285,753.35/18,572.05
  6. Step 6: Final answer
    x = 20,368.55

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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.