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Finding the Fourth Proportional to 13,439.96, 18,546.72 and 7,471.52

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Solution

The fourth proportional to 13,439.96, 18,546.72 and 7,471.52 is: 10,310.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.96 : 18,546.72 = 7,471.52 : x
  2. Step 2: Convert to fraction form
    13,439.96/18,546.72 = 7,471.52/x
  3. Step 3: Cross multiply
    13,439.96x = 18,546.72 × 7,471.52
  4. Step 4: Simplify right side
    13,439.96x = 138,572,189.41
  5. Step 5: Solve for x
    x = 138,572,189.41/13,439.96
  6. Step 6: Final answer
    x = 10,310.46

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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.