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Finding the Fourth Proportional to 26,958.98, 40,438.71 and 9,428.87

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Solution

The fourth proportional to 26,958.98, 40,438.71 and 9,428.87 is: 14,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,958.98 : 40,438.71 = 9,428.87 : x
  2. Step 2: Convert to fraction form
    26,958.98/40,438.71 = 9,428.87/x
  3. Step 3: Cross multiply
    26,958.98x = 40,438.71 × 9,428.87
  4. Step 4: Simplify right side
    26,958.98x = 381,291,137.36
  5. Step 5: Solve for x
    x = 381,291,137.36/26,958.98
  6. Step 6: Final answer
    x = 14,143.38

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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.