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Finding the Fourth Proportional to 19,294.76, 28,942.74 and 6,644.38

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Solution

The fourth proportional to 19,294.76, 28,942.74 and 6,644.38 is: 9,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.76 : 28,942.74 = 6,644.38 : x
  2. Step 2: Convert to fraction form
    19,294.76/28,942.74 = 6,644.38/x
  3. Step 3: Cross multiply
    19,294.76x = 28,942.74 × 6,644.38
  4. Step 4: Simplify right side
    19,294.76x = 192,306,562.80
  5. Step 5: Solve for x
    x = 192,306,562.80/19,294.76
  6. Step 6: Final answer
    x = 9,966.78

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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.