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Finding the Fourth Proportional to 18,900.24, 26,074.80 and 11,346.99

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Solution

The fourth proportional to 18,900.24, 26,074.80 and 11,346.99 is: 15,654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.24 : 26,074.80 = 11,346.99 : x
  2. Step 2: Convert to fraction form
    18,900.24/26,074.80 = 11,346.99/x
  3. Step 3: Cross multiply
    18,900.24x = 26,074.80 × 11,346.99
  4. Step 4: Simplify right side
    18,900.24x = 295,870,494.85
  5. Step 5: Solve for x
    x = 295,870,494.85/18,900.24
  6. Step 6: Final answer
    x = 15,654.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.