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Finding the Fourth Proportional to 19,185.93, 28,778.94 and 7,490.95

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Solution

The fourth proportional to 19,185.93, 28,778.94 and 7,490.95 is: 11,236.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,185.93 : 28,778.94 = 7,490.95 : x
  2. Step 2: Convert to fraction form
    19,185.93/28,778.94 = 7,490.95/x
  3. Step 3: Cross multiply
    19,185.93x = 28,778.94 × 7,490.95
  4. Step 4: Simplify right side
    19,185.93x = 215,581,528.65
  5. Step 5: Solve for x
    x = 215,581,528.65/19,185.93
  6. Step 6: Final answer
    x = 11,236.44

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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.