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Finding the Fourth Proportional to 18,474.89, 27,708.28 and 5,324.40

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Solution

The fourth proportional to 18,474.89, 27,708.28 and 5,324.40 is: 7,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.89 : 27,708.28 = 5,324.40 : x
  2. Step 2: Convert to fraction form
    18,474.89/27,708.28 = 5,324.40/x
  3. Step 3: Cross multiply
    18,474.89x = 27,708.28 × 5,324.40
  4. Step 4: Simplify right side
    18,474.89x = 147,529,952.72
  5. Step 5: Solve for x
    x = 147,529,952.72/18,474.89
  6. Step 6: Final answer
    x = 7,985.43

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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.