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Finding the Fourth Proportional to 18,057.78, 27,098.01 and 7,668.72

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Solution

The fourth proportional to 18,057.78, 27,098.01 and 7,668.72 is: 11,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.78 : 27,098.01 = 7,668.72 : x
  2. Step 2: Convert to fraction form
    18,057.78/27,098.01 = 7,668.72/x
  3. Step 3: Cross multiply
    18,057.78x = 27,098.01 × 7,668.72
  4. Step 4: Simplify right side
    18,057.78x = 207,807,051.25
  5. Step 5: Solve for x
    x = 207,807,051.25/18,057.78
  6. Step 6: Final answer
    x = 11,507.90

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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.