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Finding the Fourth Proportional to 18,453.81, 27,623.31 and 17,863.32

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Solution

The fourth proportional to 18,453.81, 27,623.31 and 17,863.32 is: 26,739.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.81 : 27,623.31 = 17,863.32 : x
  2. Step 2: Convert to fraction form
    18,453.81/27,623.31 = 17,863.32/x
  3. Step 3: Cross multiply
    18,453.81x = 27,623.31 × 17,863.32
  4. Step 4: Simplify right side
    18,453.81x = 493,444,025.99
  5. Step 5: Solve for x
    x = 493,444,025.99/18,453.81
  6. Step 6: Final answer
    x = 26,739.41

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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.