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Finding the Fourth Proportional to 18,216.76, 27,174.20 and 17,679.64

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Solution

The fourth proportional to 18,216.76, 27,174.20 and 17,679.64 is: 26,372.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.76 : 27,174.20 = 17,679.64 : x
  2. Step 2: Convert to fraction form
    18,216.76/27,174.20 = 17,679.64/x
  3. Step 3: Cross multiply
    18,216.76x = 27,174.20 × 17,679.64
  4. Step 4: Simplify right side
    18,216.76x = 480,430,073.29
  5. Step 5: Solve for x
    x = 480,430,073.29/18,216.76
  6. Step 6: Final answer
    x = 26,372.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.