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Finding the Fourth Proportional to 19,672.38, 29,508.38 and 11,777.12

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Solution

The fourth proportional to 19,672.38, 29,508.38 and 11,777.12 is: 17,665.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.38 : 29,508.38 = 11,777.12 : x
  2. Step 2: Convert to fraction form
    19,672.38/29,508.38 = 11,777.12/x
  3. Step 3: Cross multiply
    19,672.38x = 29,508.38 × 11,777.12
  4. Step 4: Simplify right side
    19,672.38x = 347,523,732.27
  5. Step 5: Solve for x
    x = 347,523,732.27/19,672.38
  6. Step 6: Final answer
    x = 17,665.57

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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.