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Finding the Fourth Proportional to 13,394.80, 18,484.83 and 7,426.54

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Solution

The fourth proportional to 13,394.80, 18,484.83 and 7,426.54 is: 10,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.80 : 18,484.83 = 7,426.54 : x
  2. Step 2: Convert to fraction form
    13,394.80/18,484.83 = 7,426.54/x
  3. Step 3: Cross multiply
    13,394.80x = 18,484.83 × 7,426.54
  4. Step 4: Simplify right side
    13,394.80x = 137,278,329.39
  5. Step 5: Solve for x
    x = 137,278,329.39/13,394.80
  6. Step 6: Final answer
    x = 10,248.63

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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.