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Finding the Fourth Proportional to 19,062.95, 28,605.62 and 7,968.78

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Solution

The fourth proportional to 19,062.95, 28,605.62 and 7,968.78 is: 11,957.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,062.95 : 28,605.62 = 7,968.78 : x
  2. Step 2: Convert to fraction form
    19,062.95/28,605.62 = 7,968.78/x
  3. Step 3: Cross multiply
    19,062.95x = 28,605.62 × 7,968.78
  4. Step 4: Simplify right side
    19,062.95x = 227,951,912.47
  5. Step 5: Solve for x
    x = 227,951,912.47/19,062.95
  6. Step 6: Final answer
    x = 11,957.85

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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.