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Finding the Fourth Proportional to 18,660.96, 27,995.22 and 6,181.92

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Solution

The fourth proportional to 18,660.96, 27,995.22 and 6,181.92 is: 9,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.96 : 27,995.22 = 6,181.92 : x
  2. Step 2: Convert to fraction form
    18,660.96/27,995.22 = 6,181.92/x
  3. Step 3: Cross multiply
    18,660.96x = 27,995.22 × 6,181.92
  4. Step 4: Simplify right side
    18,660.96x = 173,064,210.42
  5. Step 5: Solve for x
    x = 173,064,210.42/18,660.96
  6. Step 6: Final answer
    x = 9,274.13

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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.