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Finding the Fourth Proportional to 19,008.44, 28,517.51 and 7,911.44

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Solution

The fourth proportional to 19,008.44, 28,517.51 and 7,911.44 is: 11,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.44 : 28,517.51 = 7,911.44 : x
  2. Step 2: Convert to fraction form
    19,008.44/28,517.51 = 7,911.44/x
  3. Step 3: Cross multiply
    19,008.44x = 28,517.51 × 7,911.44
  4. Step 4: Simplify right side
    19,008.44x = 225,614,446.51
  5. Step 5: Solve for x
    x = 225,614,446.51/19,008.44
  6. Step 6: Final answer
    x = 11,869.18

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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.