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Finding the Fourth Proportional to 18,574.05, 27,860.05 and 13,581.54

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Solution

The fourth proportional to 18,574.05, 27,860.05 and 13,581.54 is: 20,371.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.05 : 27,860.05 = 13,581.54 : x
  2. Step 2: Convert to fraction form
    18,574.05/27,860.05 = 13,581.54/x
  3. Step 3: Cross multiply
    18,574.05x = 27,860.05 × 13,581.54
  4. Step 4: Simplify right side
    18,574.05x = 378,382,383.48
  5. Step 5: Solve for x
    x = 378,382,383.48/18,574.05
  6. Step 6: Final answer
    x = 20,371.56

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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.