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Finding the Fourth Proportional to 49,956, 74,934 and 13,020

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Solution

The fourth proportional to 49,956, 74,934 and 13,020 is: 19,530

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,956 : 74,934 = 13,020 : x
  2. Step 2: Convert to fraction form
    49,956/74,934 = 13,020/x
  3. Step 3: Cross multiply
    49,956x = 74,934 × 13,020
  4. Step 4: Simplify right side
    49,956x = 975,640,680
  5. Step 5: Solve for x
    x = 975,640,680/49,956
  6. Step 6: Final answer
    x = 19,530

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.