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Finding the Fourth Proportional to 19,296.98, 28,993.90 and 12,280.04

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Solution

The fourth proportional to 19,296.98, 28,993.90 and 12,280.04 is: 18,450.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.98 : 28,993.90 = 12,280.04 : x
  2. Step 2: Convert to fraction form
    19,296.98/28,993.90 = 12,280.04/x
  3. Step 3: Cross multiply
    19,296.98x = 28,993.90 × 12,280.04
  4. Step 4: Simplify right side
    19,296.98x = 356,046,251.76
  5. Step 5: Solve for x
    x = 356,046,251.76/19,296.98
  6. Step 6: Final answer
    x = 18,450.88

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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.