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Finding the Fourth Proportional to 15,057.82, 20,779.52 and 8,343.42

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Solution

The fourth proportional to 15,057.82, 20,779.52 and 8,343.42 is: 11,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.82 : 20,779.52 = 8,343.42 : x
  2. Step 2: Convert to fraction form
    15,057.82/20,779.52 = 8,343.42/x
  3. Step 3: Cross multiply
    15,057.82x = 20,779.52 × 8,343.42
  4. Step 4: Simplify right side
    15,057.82x = 173,372,221.04
  5. Step 5: Solve for x
    x = 173,372,221.04/15,057.82
  6. Step 6: Final answer
    x = 11,513.77

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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.