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Finding the Fourth Proportional to 18,863.79, 28,273.81 and 17,770.29

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Solution

The fourth proportional to 18,863.79, 28,273.81 and 17,770.29 is: 26,634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.79 : 28,273.81 = 17,770.29 : x
  2. Step 2: Convert to fraction form
    18,863.79/28,273.81 = 17,770.29/x
  3. Step 3: Cross multiply
    18,863.79x = 28,273.81 × 17,770.29
  4. Step 4: Simplify right side
    18,863.79x = 502,433,858.64
  5. Step 5: Solve for x
    x = 502,433,858.64/18,863.79
  6. Step 6: Final answer
    x = 26,634.83

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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.