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Finding the Fourth Proportional to 18,416.87, 25,414.59 and 11,258.77

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Solution

The fourth proportional to 18,416.87, 25,414.59 and 11,258.77 is: 15,536.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,416.87 : 25,414.59 = 11,258.77 : x
  2. Step 2: Convert to fraction form
    18,416.87/25,414.59 = 11,258.77/x
  3. Step 3: Cross multiply
    18,416.87x = 25,414.59 × 11,258.77
  4. Step 4: Simplify right side
    18,416.87x = 286,137,023.45
  5. Step 5: Solve for x
    x = 286,137,023.45/18,416.87
  6. Step 6: Final answer
    x = 15,536.68

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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.