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Finding the Fourth Proportional to 18,867.57, 28,301.33 and 5,016.57

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Solution

The fourth proportional to 18,867.57, 28,301.33 and 5,016.57 is: 7,524.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.57 : 28,301.33 = 5,016.57 : x
  2. Step 2: Convert to fraction form
    18,867.57/28,301.33 = 5,016.57/x
  3. Step 3: Cross multiply
    18,867.57x = 28,301.33 × 5,016.57
  4. Step 4: Simplify right side
    18,867.57x = 141,975,577.96
  5. Step 5: Solve for x
    x = 141,975,577.96/18,867.57
  6. Step 6: Final answer
    x = 7,524.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.