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Finding the Fourth Proportional to 18,891.93, 28,313.28 and 11,773.25

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Solution

The fourth proportional to 18,891.93, 28,313.28 and 11,773.25 is: 17,644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.93 : 28,313.28 = 11,773.25 : x
  2. Step 2: Convert to fraction form
    18,891.93/28,313.28 = 11,773.25/x
  3. Step 3: Cross multiply
    18,891.93x = 28,313.28 × 11,773.25
  4. Step 4: Simplify right side
    18,891.93x = 333,339,288.37
  5. Step 5: Solve for x
    x = 333,339,288.37/18,891.93
  6. Step 6: Final answer
    x = 17,644.53

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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.