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Finding the Fourth Proportional to 18,426.60, 25,428.68 and 10,043.12

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Solution

The fourth proportional to 18,426.60, 25,428.68 and 10,043.12 is: 13,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.60 : 25,428.68 = 10,043.12 : x
  2. Step 2: Convert to fraction form
    18,426.60/25,428.68 = 10,043.12/x
  3. Step 3: Cross multiply
    18,426.60x = 25,428.68 × 10,043.12
  4. Step 4: Simplify right side
    18,426.60x = 255,383,284.68
  5. Step 5: Solve for x
    x = 255,383,284.68/18,426.60
  6. Step 6: Final answer
    x = 13,859.49

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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.