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Finding the Fourth Proportional to 18,428.25, 25,431.03 and 10,044.75

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Solution

The fourth proportional to 18,428.25, 25,431.03 and 10,044.75 is: 13,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.25 : 25,431.03 = 10,044.75 : x
  2. Step 2: Convert to fraction form
    18,428.25/25,431.03 = 10,044.75/x
  3. Step 3: Cross multiply
    18,428.25x = 25,431.03 × 10,044.75
  4. Step 4: Simplify right side
    18,428.25x = 255,448,338.59
  5. Step 5: Solve for x
    x = 255,448,338.59/18,428.25
  6. Step 6: Final answer
    x = 13,861.78

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1.5x scale

Why These Related Problems?

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