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Finding the Fourth Proportional to 15,105.48, 20,848.89 and 8,393.41

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Solution

The fourth proportional to 15,105.48, 20,848.89 and 8,393.41 is: 11,584.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.48 : 20,848.89 = 8,393.41 : x
  2. Step 2: Convert to fraction form
    15,105.48/20,848.89 = 8,393.41/x
  3. Step 3: Cross multiply
    15,105.48x = 20,848.89 × 8,393.41
  4. Step 4: Simplify right side
    15,105.48x = 174,993,281.81
  5. Step 5: Solve for x
    x = 174,993,281.81/15,105.48
  6. Step 6: Final answer
    x = 11,584.75

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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.