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Finding the Fourth Proportional to 18,427.36, 25,429.08 and 10,043.68

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Solution

The fourth proportional to 18,427.36, 25,429.08 and 10,043.68 is: 13,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.36 : 25,429.08 = 10,043.68 : x
  2. Step 2: Convert to fraction form
    18,427.36/25,429.08 = 10,043.68/x
  3. Step 3: Cross multiply
    18,427.36x = 25,429.08 × 10,043.68
  4. Step 4: Simplify right side
    18,427.36x = 255,401,542.21
  5. Step 5: Solve for x
    x = 255,401,542.21/18,427.36
  6. Step 6: Final answer
    x = 13,859.91

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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.