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Finding the Fourth Proportional to 19,930.60, 29,895.90 and 8,252.20

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Solution

The fourth proportional to 19,930.60, 29,895.90 and 8,252.20 is: 12,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.60 : 29,895.90 = 8,252.20 : x
  2. Step 2: Convert to fraction form
    19,930.60/29,895.90 = 8,252.20/x
  3. Step 3: Cross multiply
    19,930.60x = 29,895.90 × 8,252.20
  4. Step 4: Simplify right side
    19,930.60x = 246,706,945.98
  5. Step 5: Solve for x
    x = 246,706,945.98/19,930.60
  6. Step 6: Final answer
    x = 12,378.30

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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.