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Finding the Fourth Proportional to 19,073.53, 28,589.64 and 7,986.25

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Solution

The fourth proportional to 19,073.53, 28,589.64 and 7,986.25 is: 11,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,073.53 : 28,589.64 = 7,986.25 : x
  2. Step 2: Convert to fraction form
    19,073.53/28,589.64 = 7,986.25/x
  3. Step 3: Cross multiply
    19,073.53x = 28,589.64 × 7,986.25
  4. Step 4: Simplify right side
    19,073.53x = 228,324,012.45
  5. Step 5: Solve for x
    x = 228,324,012.45/19,073.53
  6. Step 6: Final answer
    x = 11,970.73

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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.