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Finding the Fourth Proportional to 18,045.72, 27,070.78 and 7,653.96

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Solution

The fourth proportional to 18,045.72, 27,070.78 and 7,653.96 is: 11,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045.72 : 27,070.78 = 7,653.96 : x
  2. Step 2: Convert to fraction form
    18,045.72/27,070.78 = 7,653.96/x
  3. Step 3: Cross multiply
    18,045.72x = 27,070.78 × 7,653.96
  4. Step 4: Simplify right side
    18,045.72x = 207,198,667.29
  5. Step 5: Solve for x
    x = 207,198,667.29/18,045.72
  6. Step 6: Final answer
    x = 11,481.87

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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.