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Finding the Fourth Proportional to 18,147, 27,219.42 and 6,460.32

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Solution

The fourth proportional to 18,147, 27,219.42 and 6,460.32 is: 9,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147 : 27,219.42 = 6,460.32 : x
  2. Step 2: Convert to fraction form
    18,147/27,219.42 = 6,460.32/x
  3. Step 3: Cross multiply
    18,147x = 27,219.42 × 6,460.32
  4. Step 4: Simplify right side
    18,147x = 175,846,163.41
  5. Step 5: Solve for x
    x = 175,846,163.41/18,147
  6. Step 6: Final answer
    x = 9,690.10

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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.