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Finding the Fourth Proportional to 19,930.86, 29,898.72 and 8,252.28

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Solution

The fourth proportional to 19,930.86, 29,898.72 and 8,252.28 is: 12,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.86 : 29,898.72 = 8,252.28 : x
  2. Step 2: Convert to fraction form
    19,930.86/29,898.72 = 8,252.28/x
  3. Step 3: Cross multiply
    19,930.86x = 29,898.72 × 8,252.28
  4. Step 4: Simplify right side
    19,930.86x = 246,732,609.08
  5. Step 5: Solve for x
    x = 246,732,609.08/19,930.86
  6. Step 6: Final answer
    x = 12,379.43

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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.